mt76: update to the latest version, fixes rate control issues

Should improve performance considerably in many cases

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

package/kernel/mt76/Makefile

@@ -8,9 +8,9 @@ PKG_LICENSE_FILES:=
 
 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:=4a13b61275b16f840c4856b58633b0c11e8ab18e4111c90265153317730df696
+PKG_SOURCE_DATE:=2017-06-16
+PKG_SOURCE_VERSION:=70d225123fa106667fb96265fe62162339e36ddc
+PKG_MIRROR_HASH:=f3ee626ac485398488ca6c549e44ffaff72dc8ac324f53af7994c9bb0ca8925f
 
 PKG_MAINTAINER:=Felix Fietkau <[email protected]>
 PKG_BUILD_PARALLEL:=1