Update to 6.4.8 and apply upstream config changes

See https://gitlab.archlinux.org/archlinux/packaging/packages/linux/-/commit/c1dba2cf7a04ddbf435f7ef434b5c91e79c05285

Author: rnestler

.SRCINFO

@@ -1,8 +1,8 @@
 pkgbase = linux-rust
 	pkgdesc = Rust Linux
-	pkgver = 6.4.7.arch1
+	pkgver = 6.4.8.arch1
 	pkgrel = 1
-	url = https://github.com/archlinux/linux/commits/v6.4.7-arch1
+	url = https://github.com/archlinux/linux/commits/v6.4.8-arch1
 	arch = x86_64
 	license = GPL2
 	makedepends = bc
@@ -19,15 +19,15 @@ pkgbase = linux-rust
 	makedepends = tar
 	makedepends = xz
 	options = !strip
-	source = archlinux-linux::git+https://github.com/archlinux/linux?signed#tag=v6.4.7-arch1
+	source = archlinux-linux::git+https://github.com/archlinux/linux?signed#tag=v6.4.8-arch1
 	source = config
 	source = rust-toolchain
 	validpgpkeys = ABAF11C65A2970B130ABE3C479BE3E4300411886
 	validpgpkeys = 647F28654894E3BD457199BE38DBBDC86092693E
 	validpgpkeys = A2FF3A36AAA56654109064AB19802F8B0D70FC30
 	validpgpkeys = C7E7849466FE2358343588377258734B41C31549
 	b2sums = SKIP
-	b2sums = aca117ad9fd93b06b453fd86807ff9ffc32fbaa6949ecd1c69033706f79f26f91d2c8a0b22d1ff1a6c2a2970ab7c3a9d39cf7bd8df36a54ee23fe278d1317a4b
+	b2sums = 7a4f14cb011235d6a1c98e8258ad805022fc472a69bd087855dddfb5b5551018a5bceb9d6537ae3083627280f65d4857a2544ce605e170be29bb9dd1683be6dc
 	b2sums = 901111182b9026f9592306b116bb6b9db02e27af803c5d5db856b5141f383305d0558b42f37a00b1a8112689d21334e4d49c69c8b96fa9cdd605b828b3abcc7a
 
 pkgname = linux-rust

PKGBUILD

@@ -1,7 +1,7 @@
 # Maintainer: Raphael Nestler (rnestler) <raphael.nestler@gmail.com>
 
 pkgbase=linux-rust
-pkgver=6.4.7.arch1
+pkgver=6.4.8.arch1
 pkgrel=1
 pkgdesc='Rust Linux'
 _srctag=v${pkgver%.*}-${pkgver##*.}
@@ -37,7 +37,7 @@ validpgpkeys=(
   C7E7849466FE2358343588377258734B41C31549  # David Runge <dvzrv@archlinux.org>
 )
 b2sums=('SKIP'
-        'aca117ad9fd93b06b453fd86807ff9ffc32fbaa6949ecd1c69033706f79f26f91d2c8a0b22d1ff1a6c2a2970ab7c3a9d39cf7bd8df36a54ee23fe278d1317a4b'
+        '7a4f14cb011235d6a1c98e8258ad805022fc472a69bd087855dddfb5b5551018a5bceb9d6537ae3083627280f65d4857a2544ce605e170be29bb9dd1683be6dc'
         '901111182b9026f9592306b116bb6b9db02e27af803c5d5db856b5141f383305d0558b42f37a00b1a8112689d21334e4d49c69c8b96fa9cdd605b828b3abcc7a')
 
 export KBUILD_BUILD_HOST=archlinux

config

@@ -2339,7 +2339,7 @@ CONFIG_ISCSI_IBFT=m
 CONFIG_FW_CFG_SYSFS=m
 # CONFIG_FW_CFG_SYSFS_CMDLINE is not set
 CONFIG_SYSFB=y
-# CONFIG_SYSFB_SIMPLEFB is not set
+CONFIG_SYSFB_SIMPLEFB=y
 CONFIG_FW_CS_DSP=m
 CONFIG_GOOGLE_FIRMWARE=y
 # CONFIG_GOOGLE_SMI is not set