Bump Linux Kernel to v6.12

Linux Kernel v6.7 propose a solution to resolve sound stutter effect.
Therefore, upgrade Linux Kernel version to v6.12 as it is an LTS
version with the proposed solution included.

Author: Cuda-Chen

configs/buildroot.config

@@ -21,12 +21,12 @@ BR2_TOOLCHAIN_BUILDROOT_VENDOR="buildroot"
 BR2_TOOLCHAIN_BUILDROOT_GLIBC=y
 BR2_TOOLCHAIN_BUILDROOT_LIBC="glibc"
 # BR2_TOOLCHAIN_BUILDROOT_CXX is not set
-BR2_KERNEL_HEADERS_6_1=y
+BR2_KERNEL_HEADERS_6_12=y
 BR2_BINUTILS_VERSION_2_42_X=y
 # BR2_BINUTILS_GPROFNG is not set
 BR2_GCC_VERSION_14_X=y
 BR2_EXTRA_GCC_CONFIG_OPTIONS="--enable-softfloat"
-BR2_TOOLCHAIN_HEADERS_AT_LEAST="6.1"
+BR2_TOOLCHAIN_HEADERS_AT_LEAST="6.12"
 BR2_TOOLCHAIN_GCC_AT_LEAST_14=y
 BR2_TOOLCHAIN_GCC_AT_LEAST="14"
 BR2_SSP_NONE=y

scripts/build-image.sh

@@ -37,7 +37,7 @@ function do_buildroot
 
 function do_linux
 {
-    ASSERT git clone https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git -b linux-6.1.y --depth=1
+    ASSERT git clone https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git -b linux-6.12.y --depth=1
     cp -f configs/linux.config linux/.config
     export PATH="$PWD/buildroot/output/host/bin:$PATH"
     export CROSS_COMPILE=riscv32-buildroot-linux-gnu-