arm: add kernel common recipes

add kernel and dtc tool append recipes.

Change-Id: Ie29a4e086de83140f09e7a17b5a6278090c610b0
Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>

arm/recipes-kernel/dtc/dtc_%.bbappend

@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: MIT
+#
+# Copyright (c) 2019 Arm Limited
+#
+
+SRC_URI = "git://git.kernel.org/pub/scm/utils/dtc/dtc.git"
+
+SRCREV = "65cc4d2748a2c2e6f27f1cf39e07a5dbabd80ebf"
+
+LIC_FILES_CHKSUM = "file://GPL;md5=94d55d512a9ba36caa9b7df079bae19f"

arm/recipes-kernel/linux/linux-arm-common.inc

@@ -0,0 +1,35 @@
+# SPDX-License-Identifier: MIT
+#
+# Copyright (c) 2019 Arm Limited
+#
+
+DESCRIPTION = "Linux Kernel provided and supported by Arm and Linaro with \
+focus on vexpress and other Arm models and hardware. Trying to be as much \
+as possible close to upstream tree."
+SECTION = "kernel"
+LICENSE = "GPLv2"
+SRCREV_FORMAT = "kernel"
+
+require recipes-kernel/linux/linux-yocto.inc
+
+KERNEL_VERSION_SANITY_SKIP = "1"
+
+S = "${WORKDIR}/git"
+
+COMPATIBLE_MACHINE = "(vexpress-a5|vexpress-a32|corstone700|a5ds)"
+
+# Override do_kernel_configme to avoid kernel being assembled into a linux-yocto style kernel
+# https://www.yoctoproject.org/docs/1.8/ref-manual/ref-manual.html#ref-tasks-kernel_configme
+do_kernel_configme() {
+}
+
+KBRANCH = ""
+LINUX_VERSION ?= "5.2"
+
+LIC_FILES_CHKSUM = "file://COPYING;md5=bbea815ee2795b2f4230826c0c6b8814"
+
+SRC_URI = "\
+	  git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux;protocol=https;nobranch=1 \
+	"
+
+SRCREV = "v5.2"

arm/recipes-kernel/linux/linux-arm.bb

@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: MIT
+#
+# Copyright (c) 2019 Arm Limited
+#
+
+SUMMARY = "Linux Kernel provided and supported by Arm/Linaro"
+
+require recipes-kernel/linux/linux-arm-common.inc