ath79: move 5.15 testing kernel to common Makefile

All subtargets are using now 5.15 as testing kernel.
Move KERNEL_TESTING_PATCHVER:=5.15 to the common Makefile.

Signed-off-by: Nick Hainke <[email protected]>

target/linux/ath79/Makefile

@@ -9,6 +9,7 @@ SUBTARGETS:=generic mikrotik nand tiny
 FEATURES:=ramdisk squashfs usbgadget
 
 KERNEL_PATCHVER:=5.10
+KERNEL_TESTING_PATCHVER:=5.15
 
 include $(INCLUDE_DIR)/target.mk
 

target/linux/ath79/generic/target.mk

@@ -2,8 +2,6 @@ BOARDNAME:=Generic
 
 DEFAULT_PACKAGES += wpad-basic-wolfssl
 
-KERNEL_TESTING_PATCHVER:=5.15
-
 define Target/Description
 	Build firmware images for generic Atheros AR71xx/AR913x/AR934x based boards.
 endef

target/linux/ath79/mikrotik/target.mk

@@ -5,8 +5,6 @@ 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).

target/linux/ath79/nand/target.mk

@@ -4,8 +4,6 @@ FEATURES += nand
 
 DEFAULT_PACKAGES += wpad-basic-wolfssl
 
-KERNEL_TESTING_PATCHVER:=5.15
-
 define Target/Description
 	Firmware for boards using Qualcomm Atheros, MIPS-based SoCs
 	in the ar72xx and subsequent series, with support for NAND flash

target/linux/ath79/tiny/target.mk

@@ -3,8 +3,6 @@ FEATURES += low_mem small_flash
 
 DEFAULT_PACKAGES += wpad-basic-wolfssl
 
-KERNEL_TESTING_PATCHVER:=5.15
-
 define Target/Description
 	Build firmware images for Atheros AR71xx/AR913x/AR934x based boards with small flash
 endef