[openwrt/openwrt] ath79: mikrotik: define the testing kernel version

[LEDE Commits]

xback pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/f8512661b5f1fa3d8e8eaca6f34030ad45b26989

commit f8512661b5f1fa3d8e8eaca6f34030ad45b26989
Author: Koen Vandeputte <koen.vandeputte at citymesh.com>
AuthorDate: Fri Apr 9 16:08:00 2021 +0200

    ath79: mikrotik: define the testing kernel version
    
    commit d6b785d477 ("ath79: add kernel 5.10 support") moved
    KERNEL_TESTING_PATCHVER to a subtarget level,
    but is looks like Mikrotik subtarget was forgotten.
    
    Also add it for Mikrotik.
    
    Signed-off-by: Koen Vandeputte <koen.vandeputte at citymesh.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..b98f701fda 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:=5.10
+
 define Target/Description
 	Build firmware images for MikroTik devices based on Qualcomm Atheros
 	MIPS SoCs (AR71xx, AR72xx, AR91xx, AR93xx, QCA95xx).