staging: rtl8192su: fix compile error from wireless-testing commit

In wireless-testing, commit 7044cc56 added struct ieee80211_hdr_3addr
to include/linux/ieee80211.h. This definition collides with one that is
in the rtl8192su driver in staging.

The conflict is resolved by changing rtl8192su
to use the definition from include/linux/ieee80211.h.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/staging/rtl8192su/r8192U_core.c b/drivers/staging/rtl8192su/r8192U_core.c
index 66274d7..2b079fb6 100644
--- a/drivers/staging/rtl8192su/r8192U_core.c
+++ b/drivers/staging/rtl8192su/r8192U_core.c
@@ -6166,7 +6166,7 @@
 	u16 sc ;
 	unsigned int frag,seq;
 	hdr = (struct ieee80211_hdr_3addr *)buffer;
-	sc = le16_to_cpu(hdr->seq_ctl);
+	sc = le16_to_cpu(hdr->seq_ctrl);
 	frag = WLAN_GET_SEQ_FRAG(sc);
 	seq = WLAN_GET_SEQ_SEQ(sc);
 	//cosa add 04292008 to record the sequence number
@@ -6825,7 +6825,7 @@
 	tmp_buf = (u8*)skb->data;// + get_rxpacket_shiftbytes_819xusb(pstats);
 
 	hdr = (struct ieee80211_hdr_3addr *)tmp_buf;
-	fc = le16_to_cpu(hdr->frame_ctl);
+	fc = le16_to_cpu(hdr->frame_control);
 	type = WLAN_FC_GET_TYPE(fc);
 	praddr = hdr->addr1;