rpi-kernel: update to 4.14.22.

Upstream has moved to 4.14.x:
https://www.raspberrypi.org/forums/viewtopic.php?f=29&t=197689

Closes: #11279 [via git-merge-pr]

srcpkgs/rpi-kernel/template

@@ -1,10 +1,10 @@
 # Template file for 'rpi-kernel'
 #
-_githash="6071d6022278d8b150e6427ba7b16624e0512358"
+_githash="d95cdf3e6a0506e3a728b0c80ae02368779d2768"
 _gitshort="${_githash:0:7}"
 
 pkgname=rpi-kernel
-version=4.9.78
+version=4.14.22
 revision=1
 wrksrc="linux-${_githash}"
 maintainer="Juan RP <xtraeme@voidlinux.eu>"
@@ -12,7 +12,7 @@ homepage="http://www.kernel.org"
 license="GPL-2"
 short_desc="The Linux kernel for Raspberry Pi (${version%.*} series [git ${_gitshort}])"
 distfiles="https://github.com/raspberrypi/linux/archive/${_githash}.tar.gz"
-checksum=c6d7146593cf5068e5b5860c1bf695566eb28304d520d550dde1dfa1735d52ef
+checksum=76fb7fd5e9981fa74b4857f62a8e5b4e83c76e833a93463b7bf2427c3e144436
 
 _kernver="${version}_${revision}"
 
@@ -85,6 +85,9 @@ do_install() {
 	# Install kernel, firmware and modules
 	make ${makejobs} ARCH=arm INSTALL_MOD_PATH=${DESTDIR} modules_install
 
+	# Install device tree blobs
+	make ${makejobs} ARCH=arm INSTALL_DTBS_PATH=${DESTDIR}/boot dtbs_install
+
 	vmkdir boot
 	# Generate kernel.img and install it to destdir.
 	case "$XBPS_TARGET_MACHINE" in
@@ -96,10 +99,6 @@ do_install() {
 		;;
 	esac
 
-	vmkdir boot/overlays
-	mv arch/arm/boot/dts/overlays/*.dtbo ${DESTDIR}/boot/overlays
-	mv arch/arm/boot/dts/*.dtb ${DESTDIR}/boot
-
 	hdrdest=${DESTDIR}/usr/src/${sourcepkg}-headers-${_kernver}
 
 	# Switch to /usr.
@@ -141,10 +140,6 @@ do_install() {
 	cp arch/arm/Makefile ${hdrdest}/arch/arm
 	cp arch/arm/kernel/asm-offsets.s ${hdrdest}/arch/arm/kernel
 
-	# Add docbook makefile
-	install -Dm644 Documentation/DocBook/Makefile \
-		${hdrdest}/Documentation/DocBook/Makefile
-
 	# Add md headers
 	mkdir -p ${hdrdest}/drivers/md
 	cp drivers/md/*.h ${hdrdest}/drivers/md