iw: fix IW_FULL guards in size reduction patch

Two of the IW_FULL guards in 200-reduce_size.patch were inverted
or incomplete:

 * the "unknown event" handler unconditionally replaced the
   verbose print with the short form, so IW_FULL builds lost
   the command name decoding;
 * the early return before the vendor IE parser used
   #ifdef IW_FULL, which suppressed parsing in the full build
   instead of the size-reduced one.

Wrap both with the correct #ifndef IW_FULL / #else so the full
and reduced builds produce the intended output.

Link: https://github.com/openwrt/openwrt/pull/23009
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

package/network/utils/iw/patches/200-reduce_size.patch

@@ -24,15 +24,18 @@
  	case NL80211_CMD_JOIN_IBSS:
  		mac_addr_n2a(macbuf, nla_data(tb[NL80211_ATTR_MAC]));
  		printf("IBSS %s joined\n", macbuf);
-@@ -1297,9 +1300,9 @@ static int print_event(struct nl_msg *ms
+@@ -1297,9 +1300,14 @@ static int print_event(struct nl_msg *ms
  	case NL80211_CMD_ASSOC_COMEBACK: /* 147 */
  		parse_assoc_comeback(tb, gnlh->cmd);
  		break;
 +#endif
  	default:
--		printf("unknown event %d (%s)\n",
--		       gnlh->cmd, command_name(gnlh->cmd));
++#ifndef IW_FULL
 +		printf("unknown event %d\n", gnlh->cmd);
++#else
+ 		printf("unknown event %d (%s)\n",
+ 		       gnlh->cmd, command_name(gnlh->cmd));
++#endif
  		break;
  	}
  
@@ -212,7 +215,7 @@
  		return;
  	}
  
-+#ifdef IW_FULL
++#ifndef IW_FULL
 +	return;
 +#endif
 +