configs/cubieboard2_defconfig: bump Linux to 6.12.5

Bump Linux kernel version to 6.12.5 and update the hash accordingly.

Signed-off-by: Scott Fan <fancp2007@gmail.com>
[Julien: add missing BR2_TARGET_UBOOT_NEEDS_GNUTLS=y]
Signed-off-by: Julien Olivain <ju.o@free.fr>

board/cubietech/cubieboard2/patches/linux/linux.hash

@@ -1,2 +1,2 @@
 # Locally calculated
-sha256  62148e7e17f54c4a5ab5e75ad4882682c54bee818948be61a5963234fc0849fc  linux-6.11.11.tar.xz
+sha256  39207fce1ce42838e085261bae0af5ce4a0843aa777cfc0f5c49bc7729602bcd  linux-6.12.5.tar.xz

configs/cubieboard2_defconfig

@@ -1,7 +1,7 @@
 BR2_arm=y
 BR2_cortex_a7=y
 BR2_ARM_FPU_NEON_VFPV4=y
-BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_6_11=y
+BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_6_12=y
 BR2_GLOBAL_PATCH_DIR="board/cubietech/cubieboard2/patches"
 BR2_DOWNLOAD_FORCE_CHECK_HASHES=y
 BR2_ROOTFS_OVERLAY="board/cubietech/cubieboard2/rootfs_overlay"
@@ -9,7 +9,7 @@ BR2_ROOTFS_POST_IMAGE_SCRIPT="support/scripts/genimage.sh"
 BR2_ROOTFS_POST_SCRIPT_ARGS="-c board/cubietech/cubieboard2/genimage.cfg"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.11.11"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.12.5"
 BR2_LINUX_KERNEL_DEFCONFIG="multi_v7"
 BR2_LINUX_KERNEL_DTS_SUPPORT=y
 BR2_LINUX_KERNEL_INTREE_DTS_NAME="allwinner/sun7i-a20-cubieboard2"
@@ -24,6 +24,7 @@ BR2_TARGET_UBOOT_BOARD_DEFCONFIG="Cubieboard2"
 BR2_TARGET_UBOOT_NEEDS_DTC=y
 BR2_TARGET_UBOOT_NEEDS_PYLIBFDT=y
 BR2_TARGET_UBOOT_NEEDS_OPENSSL=y
+BR2_TARGET_UBOOT_NEEDS_GNUTLS=y
 BR2_TARGET_UBOOT_SPL=y
 BR2_TARGET_UBOOT_SPL_NAME="u-boot-sunxi-with-spl.bin"
 BR2_PACKAGE_HOST_GENIMAGE=y