core/linux-raspberrypi4 to 5.4.83-2

Backport a fix from rpi-5.10.y branch which is required in order for
seeking to work properly for non-HEVC videos when using HW accel decoding.

This can be removed once we swtich over to the rpi-5.10.y branch.

See: 579551ef13

core/linux-raspberrypi4/PKGBUILD

@@ -11,7 +11,7 @@ _srcname=linux-${_commit}
 _kernelname=${pkgbase#linux}
 _desc="Raspberry Pi 4"
 pkgver=5.4.83
-pkgrel=1
+pkgrel=2
 arch=('armv7h' 'aarch64')
 url="http://www.kernel.org/"
 license=('GPL2')
@@ -22,7 +22,8 @@ source=("https://github.com/raspberrypi/linux/archive/${_commit}.tar.gz"
         'linux.preset'
         '60-linux.hook'
         '90-linux.hook'
-        0001-Make-proc-cpuinfo-consistent-on-arm64-and-arm.patch)
+        0001-Make-proc-cpuinfo-consistent-on-arm64-and-arm.patch
+        PR4002.patch::https://patch-diff.githubusercontent.com/raw/raspberrypi/linux/pull/4002.patch)
 source_armv7h=('config' 'config.txt')
 source_aarch64=('config8' 'config8.txt')
 md5sums=('6c8790707ffc9440e1bcae20b697e9ec'
@@ -30,7 +31,8 @@ md5sums=('6c8790707ffc9440e1bcae20b697e9ec'
          '86d4a35722b5410e3b29fc92dae15d4b'
          'ce6c81ad1ad1f8b333fd6077d47abdaf'
          '69e1db90d78f691dc446fe2ab94727eb'
-         'f66a7ea3feb708d398ef57e4da4815e9')
+         'f66a7ea3feb708d398ef57e4da4815e9'
+         'efb1191fd272d3db49fc19e034408a1c')
 md5sums_armv7h=('0fc39bc5d19ba8503011ab5e033de67d'
                 '7c6b37a1353caccf6d3786bb4161c218')
 md5sums_aarch64=('80fb4289dfeca2f541416e5cf0dd3a81'
@@ -52,6 +54,10 @@ prepare() {
   sed -i '2iexit 0' scripts/depmod.sh
 
   patch -Np1 -i ../0001-Make-proc-cpuinfo-consistent-on-arm64-and-arm.patch
+
+  # this PR is required for correct seeking of non-HEVC videos on 5.4.y kernels
+  # see: https://github.com/popcornmix/xbmc/commit/579551ef130f80963a857f0af3a2a984b112d26c
+  patch -Np1 -i ../PR4002.patch
 }
 
 build() {