configs/cubieboard2: bump Linux to 6.12.24 and U-Boot to 2025.04

Signed-off-by: Scott Fan <fancp2007@gmail.com>
Signed-off-by: Julien Olivain <ju.o@free.fr>

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

@@ -1,2 +1,2 @@
 # Locally calculated
-sha256  9423f4bfb4d875417e39cb0b017b5499fea47da56119f0cd28a201735d898f14  linux-6.12.14.tar.xz
+sha256  643142c1b5991560dd12f950825cc19e4497b95b82641918ecff1177f4130c1d  linux-6.12.24.tar.xz

board/cubietech/cubieboard2/patches/uboot/uboot.hash

@@ -1,2 +1,2 @@
 # Locally calculated
-sha256  cdef7d507c93f1bbd9f015ea9bc21fa074268481405501945abc6f854d5b686f  u-boot-2025.01.tar.bz2
+sha256  439d3bef296effd54130be6a731c5b118be7fddd7fcc663ccbc5fb18294d8718  u-boot-2025.04.tar.bz2

configs/cubieboard2_defconfig

@@ -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="6.12.14"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.12.24"
 BR2_LINUX_KERNEL_DEFCONFIG="multi_v7"
 BR2_LINUX_KERNEL_DTS_SUPPORT=y
 BR2_LINUX_KERNEL_INTREE_DTS_NAME="allwinner/sun7i-a20-cubieboard2"
@@ -19,7 +19,7 @@ BR2_TARGET_ROOTFS_EXT2_4=y
 BR2_TARGET_UBOOT=y
 BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
 BR2_TARGET_UBOOT_CUSTOM_VERSION=y
-BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2025.01"
+BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2025.04"
 BR2_TARGET_UBOOT_BOARD_DEFCONFIG="Cubieboard2"
 BR2_TARGET_UBOOT_NEEDS_DTC=y
 BR2_TARGET_UBOOT_NEEDS_PYLIBFDT=y