layerscape: add 6.6 testing kernel

Support is ready. Let's enable 6.6 as testing version.

Signed-off-by: Pawel Dembicki <[email protected]>

target/linux/layerscape/Makefile

@@ -8,6 +8,7 @@ BOARD:=layerscape
 BOARDNAME:=NXP Layerscape
 
 KERNEL_PATCHVER:=6.1
+KERNEL_TESTING_PATCHVER:=6.6
 
 FEATURES:=squashfs nand usb pcie gpio fpu ubifs ext4 rootfs-part boot-part
 SUBTARGETS:=armv8_64b armv7