at91: switch to kernel 6.12

switch the kernel to 6.12 by default

Signed-off-by: Goetz Goerisch <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/20871
Signed-off-by: Christian Marangi <[email protected]>

target/linux/at91/Makefile

@@ -10,8 +10,7 @@ BOARDNAME:=Microchip (Atmel AT91)
 FEATURES:=ext4 squashfs targz usbgadget ubifs
 SUBTARGETS:=sama7 sama5 sam9x
 
-KERNEL_PATCHVER:=6.6
-KERNEL_TESTING_PATCHVER:=6.12
+KERNEL_PATCHVER:=6.12
 
 include $(INCLUDE_DIR)/target.mk