[openwrt/openwrt] ath79: mikrotik: add 5.15 support for mikrotik subtarget

[LEDE Commits]

xback pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/5af9aafabbc0c3306e638d89846e1b424259478d

commit 5af9aafabbc0c3306e638d89846e1b424259478d
Author: Koen Vandeputte <koen.vandeputte at ncentric.com>
AuthorDate: Tue Apr 5 13:53:20 2022 +0200

    ath79: mikrotik: add 5.15 support for mikrotik subtarget
    
    Tested on RB922
    
    Signed-off-by: Koen Vandeputte <koen.vandeputte at ncentric.com>
---
 target/linux/ath79/mikrotik/target.mk | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/target/linux/ath79/mikrotik/target.mk b/target/linux/ath79/mikrotik/target.mk
index f5df904487..697aa003c8 100644
--- a/target/linux/ath79/mikrotik/target.mk
+++ b/target/linux/ath79/mikrotik/target.mk
@@ -5,6 +5,8 @@ IMAGES_DIR := ../../..
 
 DEFAULT_PACKAGES += wpad-basic-wolfssl
 
+KERNEL_TESTING_PATCHVER:=5.15
+
 define Target/Description
 	Build firmware images for MikroTik devices based on Qualcomm Atheros
 	MIPS SoCs (AR71xx, AR72xx, AR91xx, AR93xx, QCA95xx).