arm-bsp: Migrate a5ds to meta-kernel for stable kernels

a5ds is having issues building its stable kernel on master.  Migrate to
meta-kernel to fix the build break.  This has the benefit of meta-arm
not having a unique stable kernel recipe to maintain and support.

Also, change the name of linux-yocto-arm-platforms to be more
generic, as it doesn't accurately reflect where it is currently being
used and can be used by different kernels going forward.

Change-Id: I4e76c7f1ee4b84641279a389820940fac7130df1
Signed-off-by: Jon Mason <jon.mason@arm.com>

meta-arm-bsp/recipes-kernel/linux/linux-arm-platforms.inc

@@ -0,0 +1,46 @@
+# Kernel configuration and dts specific information
+
+#
+# Kernel configurations and dts (If not using Linux provided ones) are captured
+# in this file. Update SRC_URI and do_patch for building images with custom dts
+#
+
+FILESEXTRAPATHS_prepend := "${THISDIR}:${THISDIR}/files:"
+
+# Arm platforms kmeta
+SRC_URI_KMETA = "file://arm-platforms-kmeta;type=kmeta;name=arm-platforms-kmeta;destsuffix=arm-platforms-kmeta"
+SRC_URI_append_foundation-armv8 = " ${SRC_URI_KMETA}"
+SRC_URI_append_fvp-base = " ${SRC_URI_KMETA}"
+SRC_URI_append_juno = " ${SRC_URI_KMETA}"
+SRC_URI_append_gem5-arm64 = " ${SRC_URI_KMETA}"
+SRCREV_arm-platforms-kmeta = "6147e82375aa9df8f2a162d42ea6406c79c854c5"
+
+#
+# Cortex-A5 DesignStart KMACHINE
+#
+COMPATIBLE_MACHINE_a5ds = "a5ds"
+KMACHINE_a5ds = "a5ds"
+
+#
+# FVP FOUNDATION KMACHINE
+#
+COMPATIBLE_MACHINE_foundation-armv8 = "foundation-armv8"
+KMACHINE_foundation-armv8 = "fvp"
+
+#
+# FVP BASE KMACHINE
+#
+COMPATIBLE_MACHINE_fvp-base = "fvp-base"
+KMACHINE_fvp-base = "fvp"
+SRC_URI_append_fvp-base = " file://dts/arm;subdir=add-files"
+
+do_patch_append_fvp-base() {
+    tar -C ${WORKDIR}/add-files/dts -cf - arm | \
+        tar -C arch/arm64/boot/dts -xf -
+}
+
+#
+# Juno KMACHINE
+#
+COMPATIBLE_MACHINE_juno = "juno"
+KMACHINE_juno = "juno"