[openwrt/openwrt] mt76: update to the latest version

[LEDE Commits]

nbd pushed a commit to openwrt/openwrt.git, branch openwrt-18.06:
https://git.lede-project.org/dc7487885ef392efd547532181bec11a879c31b8

commit dc7487885ef392efd547532181bec11a879c31b8
Author: Felix Fietkau <nbd at nbd.name>
AuthorDate: Tue May 15 13:18:22 2018 +0200

    mt76: update to the latest version
    
    b2ecc52 mt76x2: fix avg_rssi estimation
    fd58b28 mt76x2: add a polling delay in mt76x2_mac_stop routine
    a78673d mt76: fix sending encrypted broadcast packets for secondary interfaces
    e87f925 mt76x2: apply coverage class on slot time too
    
    Signed-off-by: Felix Fietkau <nbd at nbd.name>
---
 package/kernel/mt76/Makefile | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/package/kernel/mt76/Makefile b/package/kernel/mt76/Makefile
index dbd2d89..7d723b9 100644
--- a/package/kernel/mt76/Makefile
+++ b/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:=2018-04-18
-PKG_SOURCE_VERSION:=e2eedc9229dad9b9d653ad0abb4f3571d1676148
-PKG_MIRROR_HASH:=5bf8879814ffb498228a070e5f8ebedd06cbf4c286a7875e8616d26f154be6ac
+PKG_SOURCE_DATE:=2018-05-15
+PKG_SOURCE_VERSION:=e87f925667a2c68e6a5a1f55e3a92c9e10570e61
+PKG_MIRROR_HASH:=7f6118d033785b509e25540fafd0166076e98b8f1d9baceab4c532e6f9d537b3
 
 PKG_MAINTAINER:=Felix Fietkau <nbd at nbd.name>
 PKG_BUILD_PARALLEL:=1