[][MAC80211][build][Fix patch fail]

[Description]
Fix patch fail
Add symbolic link of mt76-vendor for unified sigma support.
Remove unnecessary compiler flag in MT76 makefile

[Release-log]
N/A

Change-Id: Ia4e297c0648a77c4e500d926fb617cba6a1a85fb
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/6140808
diff --git a/autobuild_mac80211_release/package/kernel/mt76/patches/0010-mt76-mt7915-4addr-null-frame-using-fixed-rate-to-suc.patch b/autobuild_mac80211_release/package/kernel/mt76/patches/0010-mt76-mt7915-4addr-null-frame-using-fixed-rate-to-suc.patch
index ce550a3..aa3aeae 100644
--- a/autobuild_mac80211_release/package/kernel/mt76/patches/0010-mt76-mt7915-4addr-null-frame-using-fixed-rate-to-suc.patch
+++ b/autobuild_mac80211_release/package/kernel/mt76/patches/0010-mt76-mt7915-4addr-null-frame-using-fixed-rate-to-suc.patch
@@ -1,15 +1,15 @@
-From e55a1b50333a925c64f78e59d582bfcb9af9372a Mon Sep 17 00:00:00 2001
+From 924bfa3aeb7330cbf5c14c9a0ddebb9567e5f77c Mon Sep 17 00:00:00 2001
 From: "lian.chen" <lian.chen@mediatek.com>
 Date: Wed, 22 Jun 2022 10:31:55 +0800
-Subject: [PATCH 10/11] mt76: mt7915: 4addr null frame using fixed rate to
+Subject: [PATCH 10/12] mt76: mt7915: 4addr null frame using fixed rate to
  success WDS
 
 ---
- drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c | 3 ++-
+ mt76_connac_mac.c | 3 ++-
  1 file changed, 2 insertions(+), 1 deletion(-)
 
 diff --git a/mt76_connac_mac.c b/mt76_connac_mac.c
-index af2b33d7..27eaf224 100644
+index af2b33d..27eaf22 100644
 --- a/mt76_connac_mac.c
 +++ b/mt76_connac_mac.c
 @@ -393,7 +393,8 @@ mt76_connac2_mac_write_txwi_80211(struct mt76_dev *dev, __le32 *txwi,
@@ -23,5 +23,5 @@
  
  	txwi[2] |= cpu_to_le32(val);
 -- 
-2.25.1
+2.18.0