mt76: update mirror hash after tar portablity fix

Signed-off-by: Felix Fietkau <[email protected]>

package/kernel/mt76/Makefile

@@ -10,7 +10,7 @@ PKG_SOURCE_URL:=https://github.com/openwrt/mt76
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_DATE:=2017-05-30
 PKG_SOURCE_VERSION:=ef5b045ddf52d7033da5270c7a6ce195df24bd24
-PKG_MIRROR_HASH:=728fe56fda7bb5f7d97f5aefdb95c009d1ea7f1f092911d0d55af8b525f71466
+PKG_MIRROR_HASH:=4a13b61275b16f840c4856b58633b0c11e8ab18e4111c90265153317730df696
 
 PKG_MAINTAINER:=Felix Fietkau <[email protected]>
 PKG_BUILD_PARALLEL:=1