[openwrt/openwrt] ar7: switch to kernel 4.9

[LEDE Commits]

jogo pushed a commit to openwrt/openwrt.git, branch master:
https://git.lede-project.org/cf90313ab2022d8c8fdb05220dcfcad33d0b37a8

commit cf90313ab2022d8c8fdb05220dcfcad33d0b37a8
Author: Jonas Gorski <jonas.gorski at gmail.com>
AuthorDate: Mon Feb 12 11:42:48 2018 +0100

    ar7: switch to kernel 4.9
    
    With generic run tested and ac49x compile tested, and no complaints so
    far, let's switch to 4.9.
    
    Signed-off-by: Jonas Gorski <jonas.gorski at gmail.com>
---
 target/linux/ar7/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target/linux/ar7/Makefile b/target/linux/ar7/Makefile
index c5a6035..1f789ca 100644
--- a/target/linux/ar7/Makefile
+++ b/target/linux/ar7/Makefile
@@ -13,7 +13,7 @@ FEATURES:=squashfs atm low_mem
 MAINTAINER:=Florian Fainelli <florian at openwrt.org>
 SUBTARGETS:=generic ac49x
 
-KERNEL_PATCHVER:=3.18
+KERNEL_PATCHVER:=4.9
 
 define Target/Description
 	Build firmware images for TI AR7 based routers.