linux-postmarketos-grate: upgrade to 5.19.0_rc8 (MR 3345)

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>

device/testing/linux-postmarketos-grate/APKBUILD

 pkgname=linux-postmarketos-grate
-pkgver=5.15.0_rc4
-pkgrel=1
+pkgver=5.19.0_rc8
+pkgrel=0
 arch="armv7"
 pkgdesc="Linux kernel with experimental patches for Tegra"
 url="https://postmarketos.org"
@@ -13,7 +13,7 @@ license="GPL-2.0-only"
 
 # Source
 _flavor=postmarketos-grate
-_commit="64b369377d2b502b79a12b6c3c1b6b27d0320015"
+_commit="1adff051e7931baf427b7342acab81bc9aec7959"
 _carch="arm"
 _config="config-$_flavor.$arch"
 source="$pkgname-$pkgver-$_commit.tar.gz::https://github.com/grate-driver/linux/archive/$_commit.tar.gz
@@ -44,6 +44,6 @@ package() {
 }
 
 sha512sums="
-bc73f00ea4bc8f1e204e969e9d778646ee6f7a4414d42d352b46b44b41e4cbf2083ef7990c5225d870abbd16cb2871980799f01de010cd76e90335c92c3d0789  linux-postmarketos-grate-5.15.0_rc4-64b369377d2b502b79a12b6c3c1b6b27d0320015.tar.gz
-1c2415e35acfcc83d2b66e26985c96150885a89a1abef795f527ad71d5938c9e24c1554c9390afbd78f2462ffe61eb3c397e7e0a6dd7640e0279ab88a65a1c62  config-postmarketos-grate.armv7
+4903540d6d6cb2c700dcddfb38205bd0c9c9f8814b7dc0a54894da61d148a8bd88d7d568b9b8dfbf3dcc7a7192e26ea9d0868a99d763f1c27ef5bd47b8b897a6  linux-postmarketos-grate-5.19.0_rc8-1adff051e7931baf427b7342acab81bc9aec7959.tar.gz
+107478f4e2828765764d0b30cc43b41300d6285598a60efd098bd49a9fd8a095d8e9f96df28d06dab5e77fe070f7759b9cef156794541afb33f92c855adde606  config-postmarketos-grate.armv7
 "