[][MAC80211][app][Fix build error for openwrt master package update]

[Description]
Fix build error for openwrt master package update

[Release-log]
N/A

Change-Id: I9e09bbd33edb6930024c256246313d6f2986e172
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/6101502
diff --git a/autobuild_mac80211_release/0003-master-mt76-makefile-for-new-chip.patch b/autobuild_mac80211_release/0003-master-mt76-makefile-for-new-chip.patch
index 2eec36f..f9ee251 100644
--- a/autobuild_mac80211_release/0003-master-mt76-makefile-for-new-chip.patch
+++ b/autobuild_mac80211_release/0003-master-mt76-makefile-for-new-chip.patch
@@ -115,11 +115,13 @@
  define KernelPackage/mt7921e/install
  	$(INSTALL_DIR) $(1)/lib/firmware/mediatek
  	cp \
-@@ -489,5 +555,6 @@ $(eval $(call KernelPackage,mt7921-common))
+@@ -489,5 +555,8 @@ $(eval $(call KernelPackage,mt7921-common))
  $(eval $(call KernelPackage,mt7921u))
  $(eval $(call KernelPackage,mt7921s))
  $(eval $(call KernelPackage,mt7921e))
++ifdef CONFIG_PACKAGE_kmod-bersa
 +$(eval $(call KernelPackage,bersa))
++endif
  $(eval $(call KernelPackage,mt76))
  $(eval $(call BuildPackage,mt76-test))
 --