[rdk-b][common][bsp][Refactor and sync kernel/wifi from Openwrt]

[Description]
Refactor and sync kernel/wifi from Openwrt

[Release-log]
N/A

diff --git a/recipes-kernel/linux-mac80211/files/patches/build/build.inc b/recipes-kernel/linux-mac80211/files/patches/build/build.inc
index 74229d1..a50f5cd 100644
--- a/recipes-kernel/linux-mac80211/files/patches/build/build.inc
+++ b/recipes-kernel/linux-mac80211/files/patches/build/build.inc
@@ -8,4 +8,5 @@
     file://015-ipw200-mtu.patch \
     file://050-lib80211_option.patch \
     file://060-no_local_ssb_bcma.patch \
+    file://070-remove-broken-wext-select.patch \
     "