meta-xilinx: Clean up vendor specific machine configuration files

1. Add new metal-xilinx-vendor layer which supports vendor specific
   machine configuration files, device-tree, kernel, platform-init etc.
2. Moved below vendor machine conf files, dt and related configs from
   meta-xilinx-bsp and meta-xilinx-contrib to meta-xilinx-vendor layer.
    - microzed-zynq7.conf
    - minized-zynq7.conf
    - picozed-zynq7.conf
    - zedboard-zynq7.conf
    - zybo-zynq7.conf
    - zybo-linux-bd-zynq7.conf
    - ultra96-zynqmp.conf
3. Obsolete qemu-zynq7, s3adsp1800-qemu-microblazeeb, v350-versal and
   vc-p-a2197-00-versal from meta-xilinx-bsp layer. Users should use
   zynq-generic.conf for zynq7000 qemu boot should be functionally
   equivalent to qemu-zynq7.
4. Add new MAINTAINERS.md file and move maintainers, Mailing list and
   Patches content from meta-xilinx-* README.md to MAINTAINERS.md file.
5. Updated README.md file for supported board machines files in
   meta-xilinx-bsp, meta-xilinx-contrib and meta-xilinx-vendor layers.
6. Disabled old drm kernel patches for zybo-linux-bd-zynq mahcine in
   meta-xilinx-contrib layer as these patches doesn't apply on 5.x
   kernel, if we don't hear from patch submitter we will remove these
   patches from meta-xilinx-contrib layer.
7. Removed drm kernel cache metadate for zybo-linux-bd-zynq7 machine
   as these configs are already available in xilinx_zynq_defconfig.
8. Fixed build issue for u-boot by changing
   PREFERRED_PROVIDER_virtual/bootloader from u-boot to u-boot-xlnx.
9. Add meta-xilinx-vendor to bblayers.conf.sample

Signed-off-by: Sandeep Gundlupet Raju <sandeep.gundlupet-raju@xilinx.com>
Signed-off-by: Mark Hatle <mhatle@xilinx.com>

1 files changed, 37 insertions, 0 deletions

diff --git a/meta-xilinx-vendor/README.md b/meta-xilinx-vendor/README.md
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+# meta-xilinx-vendor
+
+This layer provides support for MicroBlaze, Zynq, ZynqMP and Versal architectures vendor boards.
+
+## Supported Boards/Machines
+
+**Boards/Machines supported by this layer:**
+
+
+| Platform | Vendor Board Variant | Machine Configuration file | Board Device tree |
+| ---| --- | ---| ---------- |
+|MicroBlaze|[Xilinx S3A DSP 1800](https://shop.trenz-electronic.de/en/TE0320-00-EV02I-FPGA-Module-with-Spartan-3A-DSP-1800K-EV02I-1-Gbit-DDR-RAM)|[s3adsp1800-qemu-microblazeeb](conf/machine/s3adsp1800-qemu-microblazeeb.conf)|NA|
+|Zynq-7000|[Avent Microzed](https://www.xilinx.com/products/boards-and-kits/1-5lakcu.html)|[microzed-zynq7](conf/machine/microzed-zynq7.conf)|`zynq-microzed.dtb`|
+||[Avnet Picozed](https://www.xilinx.com/products/boards-and-kits/1-58nuel.html)|[picozed-zynq7](conf/machine/picozed-zynq7.conf)|NA|
+||[Avnet Minized](https://www.xilinx.com/products/boards-and-kits/1-odbhjd.html)|[minized-zynq7](conf/machine/minized-zynq7.conf)|NA|
+||[Avnet/Digilent ZedBoard](https://www.xilinx.com/products/boards-and-kits/1-8dyf-11.html)|[zedboard-zynq7](conf/machine/zedboard-zynq7.conf)|NA|
+||[Digilent Zybo](https://www.xilinx.com/support/university/boards-portfolio/xup-boards/DigilentZYBO.html)|[zybo-zynq7](conf/machine/zybo-zynq7.conf)|`zynq-zybo.dtb`|
+||[Digilent Zybo Linux BD](https://www.xilinx.com/support/university/boards-portfolio/xup-boards/DigilentZYBO.html)|[zybo-linux-bd-zynq7](conf/machine/zybo-linux-bd-zynq7.conf)|NA|
+|ZynqMP|[Avent Ultra96](https://www.xilinx.com/products/boards-and-kits/1-vad4rl.html)|[ultra96-zynqmp](conf/machine/ultra96-zynqmp.conf)|`avnet-ultra96-rev1`|
+|Versal|NA|NA|NA|
+
+> **Note:** 
+`For Zybo Linux BD reference design, please see meta-xilinx-contrib layer`
+
+## Dependencies
+
+This layer depends on:
+
+        URI: git://git.openembedded.org/bitbake
+
+        URI: git://git.openembedded.org/openembedded-core
+        layers: meta
+        branch: master or xilinx current release version (e.g. hosister)
+
+        URI: git://git.yoctoproject.org/meta-xilinx.git
+        layers: meta-xilinx-microblaze, meta-xilinx-core
+        branch: master or xilinx current release version (e.g. hosister)