arm-bsp: add upstream kernel inc and v5.3 recipe

Add support to build using the upstream (Linus tree) and as first user
add recipe for v5.3, which will be later.

Change-Id: I0f30a45002adca7c0b95a0421e0291a6852295eb
Signed-off-by: Rui Miguel Silva <rui.silva@arm.com>
Signed-off-by: Jon Mason <jon.mason@arm.com>

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

@@ -0,0 +1,24 @@
+DESCRIPTION = "Linux Kernel based on upstream tree"
+SECTION = "kernel"
+LICENSE = "GPLv2"
+SRCREV_FORMAT = "kernel"
+
+require recipes-kernel/linux/linux-yocto.inc
+
+KERNEL_VERSION_SANITY_SKIP = "1"
+
+S = "${WORKDIR}/git"
+
+# Override do_kernel_configme to avoid kernel being assembled into a linux-yocto
+# style kernel
+# https://www.yoctoproject.org/docs/latest/ref-manual/ref-manual.html#ref-tasks-kernel_configme
+do_kernel_configme[noexec] = "1"
+
+# Make sure no branch is defined since here we track a specific version
+KBRANCH = ""
+
+LIC_FILES_CHKSUM = "file://COPYING;md5=bbea815ee2795b2f4230826c0c6b8814"
+
+SRC_URI = "\
+        git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux;protocol=https;nobranch=1 \
+        "

meta-arm-bsp/recipes-kernel/linux/linux-upstream-arm_5.3.bb

@@ -0,0 +1,8 @@
+# Add support for Upstream Kernel for Arm Platforms (boards or simulators)
+
+SUMMARY = "Linux Kernel Upstream, supported by Arm/Linaro"
+
+require recipes-kernel/linux/linux-upstream-arm-platforms.inc
+
+SRCREV = "v${PV}"
+LINUX_VERSION ?= "${PV}"