configs/zynqmp_zcu10x_defconfig: add parameters to generate extlinux.conf

This patch enables the zynqmp_zcu102_defconfig and zynqmp_zcu106_defconfig to
auto-generate the extlinux.conf file.

The board/zynqmp/extlinux.conf has been removed as it is no longer necessary.

Signed-off-by: Neal Frager <neal.frager@amd.com>
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

board/zynqmp/extlinux.conf

@@ -1,5 +0,0 @@
-label linux
-  kernel /Image
-  devicetree /system.dtb
-  append console=ttyPS0,115200 root=/dev/mmcblk0p2 rw rootwait
-

configs/zynqmp_zcu102_defconfig

@@ -2,6 +2,7 @@ BR2_aarch64=y
 BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_5_15=y
 BR2_ROOTFS_POST_BUILD_SCRIPT="board/zynqmp/post-build.sh"
 BR2_ROOTFS_POST_IMAGE_SCRIPT="board/zynqmp/post-image.sh"
+BR2_ROOTFS_POST_SCRIPT_ARGS="ttyPS0,115200 mmcblk0p2"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_TARBALL=y
 BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION="$(call github,Xilinx,linux-xlnx,xlnx_rebase_v5.15_LTS_2022.1)/xlnx_rebase_v5.15_LTS_2022.1.tar.gz"

configs/zynqmp_zcu106_defconfig

@@ -2,6 +2,7 @@ BR2_aarch64=y
 BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_5_15=y
 BR2_ROOTFS_POST_BUILD_SCRIPT="board/zynqmp/post-build.sh"
 BR2_ROOTFS_POST_IMAGE_SCRIPT="board/zynqmp/post-image.sh"
+BR2_ROOTFS_POST_SCRIPT_ARGS="ttyPS0,115200 mmcblk0p2"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_TARBALL=y
 BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION="$(call github,Xilinx,linux-xlnx,xlnx_rebase_v5.15_LTS_2022.1)/xlnx_rebase_v5.15_LTS_2022.1.tar.gz"