linux-raspberrypi: Add recipe for 5.15 LTS kernel

This is not default branch for linux-raspberrypi as well.

Signed-off-by: Khem Raj <raj.khem@gmail.com>

recipes-kernel/linux/linux-raspberrypi_5.15.bb

@@ -0,0 +1,19 @@
+LINUX_VERSION ?= "5.15.24"
+LINUX_RPI_BRANCH ?= "rpi-5.15.y"
+LINUX_RPI_KMETA_BRANCH ?= "yocto-5.15"
+
+SRCREV_machine = "770d94882ac145c81af72e9a37180806c3f70bbd"
+SRCREV_meta = "e1b976ee4fb5af517cf01a9f2dd4a32f560ca894"
+
+KMETA = "kernel-meta"
+
+SRC_URI = " \
+    git://github.com/raspberrypi/linux.git;name=machine;branch=${LINUX_RPI_BRANCH};protocol=https \
+    git://git.yoctoproject.org/yocto-kernel-cache;type=kmeta;name=meta;branch=${LINUX_RPI_KMETA_BRANCH};destsuffix=${KMETA} \
+    file://powersave.cfg \
+    file://android-drivers.cfg \
+    "
+
+require linux-raspberrypi.inc
+
+KERNEL_DTC_FLAGS += "-@ -H epapr"