meta-xilinx: Restructuring meta-xilinx to support multiple layers

As discussed previously on mailing list, we are proceeding with layer
restructuring. For rocko release we will have the following layers

meta-xilinx
        ->meta-xilinx-bsp (current meta-xilinx)
        ->meta-xilinx-contrib

In the subsequent releases we will add other layers from Xilinx
meta-xilinx
        ->meta-xilinx-bsp (current meta-xilinx)
        ->meta-petalinux
        ->meta-xilinx-tools
        ->meta-xilinx-contrib

This will provide one clone to get all the required meta layers from
Xilinx for a complete solution, and the users can blacklist any layer
which they don't want to use using bblayer.conf.
This will enables us to help our vendors/partners to add their reference
designs, board definitions etc.

Recipe changes :
 * Move reference design zybo-linux-bd.bb to meta-xilinx-contrib
 * Move kernel patches realted to zybo-linux-bd-zynq7 board to
   meta-xilinx-contrib
 * Update README

Signed-off-by: Manjukumar Matha <manjukumar.harthikote-matha@xilinx.com>

1 files changed, 86 insertions, 0 deletions

diff --git a/meta-xilinx-bsp/README.md b/meta-xilinx-bsp/README.md
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+meta-xilinx
+===========
+
+This layer provides support for MicroBlaze, Zynq and ZynqMP.
+
+Additional documentation:
+
+* [Building](README.building.md)
+* [Booting](README.booting.md)
+
+Supported Boards/Machines
+=========================
+
+Boards/Machines supported by this layer:
+
+* MicroBlaze:
+  * [Xilinx ML605 (QEMU)](conf/machine/ml605-qemu-microblazeel.conf) - `ml605-qemu-microblazeel` (QEMU support)
+  * [Xilinx S3A DSP 1800 (QEMU)](conf/machine/s3adsp1800-qemu-microblazeeb.conf) - `s3adsp1800-qemu-microblazeeb` (QEMU support)
+  * [Xilinx KC705](conf/machine/kc705-microblazeel.conf) - `kc705-microblazeel`
+* Zynq:
+  * [Zynq (QEMU)](conf/machine/qemu-zynq7.conf) - `qemu-zynq7` (QEMU Support)
+  * [Xilinx ZC702](conf/machine/zc702-zynq7.conf) - `zc702-zynq7` (with QEMU support)
+  * [Xilinx ZC706](conf/machine/zc706-zynq7.conf) - `zc706-zynq7` (with QEMU support)
+  * [Avnet MicroZed](conf/machine/microzed-zynq7.conf) - `microzed-zynq7`
+  * [Avnet PicoZed](conf/machine/picozed-zynq7.conf) - `picozed-zynq7`
+  * [Avnet/Digilent ZedBoard](conf/machine/zedboard-zynq7.conf) - `zedboard-zynq7`
+  * [Digilent Zybo](conf/machine/zybo-zynq7.conf) - `zybo-zynq7`
+  * [Digilent Zybo Linux BD](conf/machine/zybo-linux-bd-zynq7.conf) - `zybo-linux-bd-zynq7`
+* ZynqMP:
+  * [Xilinx ZCU102](conf/machine/zcu102-zynqmp.conf) - `zcu102-zynqmp` (QEMU support)
+
+Additional information on Xilinx architectures can be found at:
+        http://www.xilinx.com/support/index.htm
+
+For Zybo Linux BD reference design, please see meta-xilinx-contrib layer
+
+Maintainers, Mailing list, Patches
+==================================
+
+Please send any patches, pull requests, comments or questions for this layer to
+the [meta-xilinx mailing list](https://lists.yoctoproject.org/listinfo/meta-xilinx):
+
+        meta-xilinx@lists.yoctoproject.org
+
+Maintainers:
+
+        Nathan Rossi <nathan@nathanrossi.com>
+        Manjukumar Harthikote Matha <manjukumar.harthikote-matha@xilinx.com>
+
+Dependencies
+============
+
+This layer depends on:
+
+        URI: git://git.openembedded.org/bitbake
+
+        URI: git://git.openembedded.org/openembedded-core
+        layers: meta
+
+Recipe Licenses
+===============
+
+Due to licensing restrictions some recipes in this layer rely on closed source
+or restricted content provided by Xilinx. In order to use these recipes you must
+accept or agree to the licensing terms (e.g. EULA, Export Compliance, NDA,
+Redistribution, etc). This layer **does not enforce** any legal requirement, it
+is the **responsibility of the user** the ensure that they are in compliance
+with any licenses or legal requirements for content used.
+
+In order to use recipes that rely on restricted content the `xilinx` license
+flag must be white-listed in the build configuration (e.g. `local.conf`). This
+can be done on a per package basis:
+
+        LICENSE_FLAGS_WHITELIST += "xilinx_pmu-rom"
+
+or generally:
+
+        LICENSE_FLAGS_WHITELIST += "xilinx"
+
+Generally speaking Xilinx content that is provided as a restricted download
+cannot be obtained without a Xilinx account, in order to use this content you
+must first download it with your Xilinx account and place the downloaded content
+in the `downloads/` directory of your build or on a `PREMIRROR`. Attempting to
+fetch the content using bitbake will fail, indicating the URL from which to
+acquire the content.
+