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, 13 insertions, 0 deletions

diff --git a/meta-xilinx-vendor/conf/layer.conf b/meta-xilinx-vendor/conf/layer.conf
new file mode 100644
index 00000000..b3e81efc
--- /dev/null
+++ b/meta-xilinx-vendor/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 \
+            ${LAYERDIR}/recipes-*/*/*.bbappend"
+
+BBFILE_COLLECTIONS += "xilinx-vendor"
+BBFILE_PATTERN_xilinx-vendor = "^${LAYERDIR}/"
+BBFILE_PRIORITY_xilinx-vendor = "5"
+
+LAYERDEPENDS_xilinx-vendor = "xilinx"
+LAYERSERIES_COMPAT_xilinx-vendor = "honister"