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, 13 insertions, 0 deletions

diff --git a/meta-xilinx-contrib/conf/layer.conf b/meta-xilinx-contrib/conf/layer.conf
new file mode 100644
index 00000000..41ea5aa0
--- /dev/null
+++ b/meta-xilinx-contrib/conf/layer.conf
@@ -0,0 +1,13 @@
+# We have a conf and classes directory, add to BBPATH
+BBPATH .= ":${LAYERDIR}"
+
+# We have a packages directory, add to BBFILES
+BBFILES += "${LAYERDIR}/recipes-*/*/*.bb"
+BBFILES += "${LAYERDIR}/recipes-*/*/*.bbappend"
+
+BBFILE_COLLECTIONS += "xilinx-contrib"
+BBFILE_PATTERN_xilinx-contrib = "^${LAYERDIR}/"
+BBFILE_PRIORITY_xilinx-contrib = "5"
+
+LAYERDEPENDS_xilinx-contrib = "core"
+LAYERDEPENDS_xilinx-contrib = "xilinx"