configs/imx6ulz_bsh_smm_m2: bump Linux to 6.12.64 and U-Boot to 2026.01

The patch bumps the Linux kernel to version 6.12.64 and U-Boot to
version 2026.01.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Signed-off-by: Julien Olivain <ju.o@free.fr>

board/bsh/imx6ulz-bsh-smm-m2/patches/linux/linux.hash

@@ -1,2 +1,2 @@
 # From https://www.kernel.org/pub/linux/kernel/v6.x/sha256sums.asc
-sha256  55432b2af352f7bf3053c348d8549df2f2deeaa4a361c65d638c2f3b2ca7ec96  linux-6.12.56.tar.xz
+sha256  d1ad94a33681148efe884f4028970d69e332f2b003f0e8be53a1d25de38e49a2  linux-6.12.64.tar.xz

board/bsh/imx6ulz-bsh-smm-m2/patches/uboot/uboot.hash

@@ -1,2 +1,2 @@
 # Locally calculated
-sha256  b4f032848e56cc8f213ad59f9132c084dbbb632bc29176d024e58220e0efdf4a  u-boot-2025.10.tar.bz2
+sha256  b60d5865cefdbc75da8da4156c56c458e00de75a49b80c1a2e58a96e30ad0d54  u-boot-2026.01.tar.bz2

configs/imx6ulz_bsh_smm_m2_defconfig

@@ -9,7 +9,7 @@ BR2_TARGET_GENERIC_GETTY_PORT="ttymxc3"
 BR2_ROOTFS_POST_BUILD_SCRIPT="board/bsh/imx6ulz-bsh-smm-m2/post-build.sh"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.12.56"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.12.64"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/bsh/imx6ulz-bsh-smm-m2/linux.config"
 BR2_LINUX_KERNEL_DTS_SUPPORT=y
@@ -28,7 +28,7 @@ BR2_TARGET_ROOTFS_UBIFS_LEBSIZE=0x1f000
 BR2_TARGET_UBOOT=y
 BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
 BR2_TARGET_UBOOT_CUSTOM_VERSION=y
-BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2025.10"
+BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2026.01"
 BR2_TARGET_UBOOT_BOARD_DEFCONFIG="imx6ulz_smm_m2"
 BR2_TARGET_UBOOT_NEEDS_DTC=y
 BR2_TARGET_UBOOT_NEEDS_OPENSSL=y