brcm47xx: update to kernel 4.1

This makes bcm53xx use kernel 4.1 by default now.

Signed-off-by: Hauke Mehrtens <[email protected]>

SVN-Revision: 46878

target/linux/brcm47xx/Makefile

@@ -13,7 +13,7 @@ FEATURES:=squashfs usb
 SUBTARGETS:=generic mips74k legacy
 MAINTAINER:=Hauke Mehrtens <[email protected]>
 
-KERNEL_PATCHVER:=3.18
+KERNEL_PATCHVER:=4.1
 
 include $(INCLUDE_DIR)/target.mk