oxnas: switch to kernel 4.4

Signed-off-by: Daniel Golle <[email protected]>

target/linux/oxnas/Makefile

@@ -15,7 +15,7 @@ CPU_TYPE:=mpcore
 
 MAINTAINER:=Daniel Golle <[email protected]>
 
-KERNEL_PATCHVER:=4.1
+KERNEL_PATCHVER:=4.4
 
 include $(INCLUDE_DIR)/target.mk