[][MAC80211][WiFi6][app][Add atenl support for cheetah]

[Description]
Add atenl support for cheetah

[Release-log]
N/A

Change-Id: I0e543c138c9d7a189acb10efb97c9066a93909b8
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/8188100
diff --git a/feed/atenl/src/atenl.h b/feed/atenl/src/atenl.h
index 60feaf4..a5f9fbb 100644
--- a/feed/atenl/src/atenl.h
+++ b/feed/atenl/src/atenl.h
@@ -270,7 +270,7 @@
 	MT_EE_BAND_SEL_DUAL,
 };
 
-/* for mt7916/mt7986 */
+/* for mt7916/mt7981/mt7986 */
 enum {
 	MT_EE_BAND_SEL_2G,
 	MT_EE_BAND_SEL_5G,
@@ -400,6 +400,11 @@
 	return (an->chip_id == 0x7916) || (an->chip_id == 0x7906);
 }
 
+static inline bool is_mt7981(struct atenl *an)
+{
+	return an->chip_id == 0x7981;
+}
+
 static inline bool is_mt7986(struct atenl *an)
 {
 	return an->chip_id == 0x7986;