configs/arm_foundationv8: bump to Linux 6.8.10

- Bump Linux kernel to v6.8.10.
- Bump the FVP in the readme to version 11.25 build 15.

Signed-off-by: Vincent Stehlé <vincent.stehle@arm.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Arnout Vandecappelle <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

board/arm/foundation-v8/patches/linux-headers/linux-headers.hash

@@ -0,0 +1 @@
+../linux/linux.hash

board/arm/foundation-v8/patches/linux/linux.hash

@@ -0,0 +1,2 @@
+# Locally calculated
+sha256  b0bb92d982f88380e5b2059349c3a862e0afa712e0646eb0e082b9c2c5cb5176  linux-6.8.10.tar.xz

board/arm/foundation-v8/readme.txt

@@ -3,7 +3,7 @@ ARM software simulator of the AArch64 architecture.
 
 First, one has to download the AArch64 software simulator from:
 
-  https://armkeil.blob.core.windows.net/developer/Files/downloads/ecosystem-models/Foundation_Platform_11.20_15_Linux64.tgz
+  https://developer.arm.com/-/media/Files/downloads/ecosystem-models/FM_11_25/Foundation_Platform_11.25_15_Linux64.tgz
 
 Then, use the arm_foundationv8_defconfig configuration to build your
 Buildroot system.

configs/arm_foundationv8_defconfig

@@ -1,10 +1,11 @@
 BR2_aarch64=y
-# Linux headers same as kernel, a 6.1 series
-BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_6_1=y
+# Linux headers same as kernel, a 6.8 series
+BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_6_8=y
+BR2_GLOBAL_PATCH_DIR="board/arm/foundation-v8/patches"
 BR2_TARGET_GENERIC_GETTY_PORT="ttyAMA0"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.1.13"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.8.10"
 BR2_LINUX_KERNEL_USE_ARCH_DEFAULT_CONFIG=y
 BR2_LINUX_KERNEL_DTS_SUPPORT=y
 BR2_LINUX_KERNEL_INTREE_DTS_NAME="arm/foundation-v8-gicv3-psci"