update approach to enable extensions, so users still have optional control

Author: brainwavecoder9

config/sources/families/rockchip-rk3588.conf

@@ -13,7 +13,6 @@ BOOTSOURCE='https://github.com/radxa/u-boot.git'
 BOOTBRANCH='branch:next-dev-v2024.10' # Always use same version as rk35xx, they share a patch dir
 BOOTPATCHDIR="legacy/u-boot-radxa-rk35xx"
 OVERLAY_PREFIX='rockchip-rk3588'
-ENABLE_EXTENSIONS="mesa-vpu"
 
 case $BRANCH in
 
@@ -56,6 +55,11 @@ family_tweaks_bsp() {
 	:
 }
 
+function extension_prepare_config__enable_mesa_vpu() {
+	# Auto-enable mesa-vpu for RK3588 GPU acceleration
+	enable_extension "mesa-vpu"
+}
+
 # Additional CFLAGS were previously needed to disable certain errors when building vendor U-Boot.
 # This is now fixed in Radxa U-Boot sources, but left here (commented out) for reference in case new errors appear in the future.