nanopct6(-lts): bump u-boot to v2025.10 final

Author: rpardini

config/boards/nanopct6.conf

@@ -42,7 +42,7 @@ function post_family_config__nanopct6_use_mainline_uboot() {
 	declare -g BOOTCONFIG="nanopc-t6-rk3588_defconfig"
 	declare -g BOOTDELAY=1                                       # Wait for UART interrupt to enter UMS/RockUSB mode etc
 	declare -g BOOTSOURCE="https://github.com/u-boot/u-boot.git" # We ❤️ Mainline
-	declare -g BOOTBRANCH="tag:v2025.10-rc4"
+	declare -g BOOTBRANCH="tag:v2025.10"
 	declare -g BOOTPATCHDIR="v2025.10"
 	declare -g BOOTDIR="u-boot-${BOARD}" # do not share u-boot directory
 	declare -g UBOOT_TARGET_MAP="BL31=bl31.elf ROCKCHIP_TPL=${RKBIN_DIR}/${DDR_BLOB};;u-boot-rockchip.bin u-boot-rockchip-spi.bin"