mt76: update to the latest version

1d23142 mt76: add led active low to debugfs
549f43b mt7603: ensure that the ACK flag is set for A-MPDUs with any acked subframe
df9f9f6 mt7603: always try tx rate1 first
9c52f36 mt7603: pull the final rate index from the status descriptor
f36f308 mt7603: improve validation of rx frames
9a23989 mt7603: remove warning on rx with invalid channel info
7a31731 mt76: check for pending reset before attempting to schedule tx
873a7c9 mt7603: call mt76_txq_schedule_all as a barrier to prevent tx during reset
d9e5da3 mt76: add rcu locking in tid reorder function
a8e8921 mt7603: add more checks to avoid dereferencing invalid pointers in wcid lookup

Signed-off-by: Felix Fietkau <nbd@nbd.name>

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:=2018-04-09
-PKG_SOURCE_VERSION:=a3e7740ab829221eac4a262b40531f70fd4f071a
-PKG_MIRROR_HASH:=3f196a3205ff83a3bfa56710ea42fb5b68435b8aef645c2575c902371c197a77
+PKG_SOURCE_DATE:=2018-04-15
+PKG_SOURCE_VERSION:=a8e89215591e5f6be3e90056b8a981f6d099ec48
+PKG_MIRROR_HASH:=13a50519fd2065f617476d5d60e014194cbf8ae70df9dd0e9cf19613ceba5ac1
 
 PKG_MAINTAINER:=Felix Fietkau <nbd@nbd.name>
 PKG_BUILD_PARALLEL:=1