ipq40xx: switch default to 6.6

Switch default kernel version for ipq40xx to 6.6.

Signed-off-by: Christian Marangi <[email protected]>

target/linux/ipq40xx/Makefile

@@ -8,8 +8,7 @@ CPU_TYPE:=cortex-a7
 CPU_SUBTYPE:=neon-vfpv4
 SUBTARGETS:=generic chromium mikrotik
 
-KERNEL_PATCHVER:=6.1
-KERNEL_TESTING_PATCHVER:=6.6
+KERNEL_PATCHVER:=6.6
 
 KERNELNAME:=zImage Image dtbs