[openwrt/openwrt] ath79: switch default kernel to 6.12

[LEDE Commits]

nick pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/db86a07bdf9f9902164aa033be112f8a5dba8d96

commit db86a07bdf9f9902164aa033be112f8a5dba8d96
Author: Shiji Yang <yangshiji66 at outlook.com>
AuthorDate: Wed Aug 20 21:09:38 2025 +0800

    ath79: switch default kernel to 6.12
    
    We have not received any negative feedback in the past three months.
    It's time to switch the default kernel to 6.12.
    
    Signed-off-by: Shiji Yang <yangshiji66 at outlook.com>
    Link: https://github.com/openwrt/openwrt/pull/19821
    Signed-off-by: Nick Hainke <vincent at systemli.org>
---
 target/linux/ath79/Makefile | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/target/linux/ath79/Makefile b/target/linux/ath79/Makefile
index 8e04d7a8ec..1058834a75 100644
--- a/target/linux/ath79/Makefile
+++ b/target/linux/ath79/Makefile
@@ -8,8 +8,7 @@ SUBTARGETS:=generic mikrotik nand tiny
 
 FEATURES:=ramdisk squashfs usbgadget
 
-KERNEL_PATCHVER:=6.6
-KERNEL_TESTING_PATCHVER:=6.12
+KERNEL_PATCHVER:=6.12
 
 include $(INCLUDE_DIR)/target.mk