mt76: update to the latest version

ffccb48 mt76: do not wake tx queues during flush

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:=2018-11-08
-PKG_SOURCE_VERSION:=29d95328d6258778cf7d330ecfa3c2ba89bbe477
-PKG_MIRROR_HASH:=6d858da93c5332bc3d4d7f0ac49afd617213078f83718a81ee0021e8fe2d28f1
+PKG_SOURCE_DATE:=2018-11-09
+PKG_SOURCE_VERSION:=ffccb48c5082b2c6f43a0235b77b62ca388810f0
+PKG_MIRROR_HASH:=bff0063db1a1b1353f59aad16abad4dd93ceeb4c672811ad864cebe0e39c7d8d
 
 PKG_MAINTAINER:=Felix Fietkau <[email protected]>
 PKG_BUILD_PARALLEL:=1