[openwrt/openwrt] ramips: use kernel 6.12 by default

[LEDE Commits]

nick pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/3402384f173727daa90d3ff21af1472b6c21f8b5

commit 3402384f173727daa90d3ff21af1472b6c21f8b5
Author: Mieczyslaw Nalewaj <namiltd at yahoo.com>
AuthorDate: Sun Jul 6 14:37:27 2025 +0200

    ramips: use kernel 6.12 by default
    
    Switch to Linux kernel version 6.12.
    
    Signed-off-by: Mieczyslaw Nalewaj <namiltd at yahoo.com>
    Link: https://github.com/openwrt/openwrt/pull/19320
    Signed-off-by: Nick Hainke <vincent at systemli.org>
---
 target/linux/ramips/Makefile | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/target/linux/ramips/Makefile b/target/linux/ramips/Makefile
index 03aa8879c1..02597e13af 100644
--- a/target/linux/ramips/Makefile
+++ b/target/linux/ramips/Makefile
@@ -10,8 +10,7 @@ BOARDNAME:=MediaTek Ralink MIPS
 SUBTARGETS:=mt7620 mt7621 mt76x8 rt288x rt305x rt3883
 FEATURES:=squashfs gpio
 
-KERNEL_PATCHVER:=6.6
-KERNEL_TESTING_PATCHVER:=6.12
+KERNEL_PATCHVER:=6.12
 
 define Target/Description
 	Build firmware images for Ralink RT288x/RT3xxx based boards.