Update inject_80211 to avoid comiling error onboard

user_space/inject_80211/ieee80211_radiotap.h

@@ -79,7 +79,7 @@ struct ieee80211_radiotap_header {
 				 * Additional extensions are made
 				 * by setting bit 31.
 				 */
-} __packed;
+} __attribute__((packed));
 
 /* Name                                 Data type    Units
  * ----                                 ---------    -----

user_space/inject_80211/inject_80211.c

@@ -142,7 +142,7 @@ void usage(void)
 	    "-h   this menu\n\n"
 
 	    "Example:\n"
-	    "  iw dev wlan0 interface add mon0 type monitor && ifconfig mon0 up\n"
+	    "  iw dev sdr0 interface add mon0 type monitor && ifconfig mon0 up\n"
 	    "  inject_80211 mon0\n"
 	    "\n");
 	exit(1);