mt76: update to the latest version

08719b1 mt76: use a per rx queue page fragment cache
4d2c565 mt76x2: reset HW before probe
f622975 mt76x2: fix CCK protection control frame rate
6780375 mt76x2: add frame protection support

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:=2018-06-19
-PKG_SOURCE_VERSION:=1d4ca10a562b6d9eaec3aaa5f3905804070ae743
-PKG_MIRROR_HASH:=5906436e8fecd2d7d70328a9aa27c6598c242ea3bc8922ed4ec7245a3ff861cd
+PKG_SOURCE_DATE:=2018-07-13
+PKG_SOURCE_VERSION:=67803752363db5e81c7a74a9491a3041aa776284
+PKG_MIRROR_HASH:=733030674a782d96c5ea2fcbcbc2de5486f645d9fb4a84cfb74246a78b459569
 
 PKG_MAINTAINER:=Felix Fietkau <[email protected]>
 PKG_BUILD_PARALLEL:=1