staging: rtl8192u: make in ieee80211/ieee80211_tx.c some local functions static

Make some local functions (ieee80211_qurey_ShortPreambleMode and
ieee80211_query_HTCapShortGI) static and fix coding style in these
function declarations when It is necessary.

Fix the following sparse warnings in ieee80211/ieee80211_tx.c

drivers/staging/rtl8192u/ieee80211/ieee80211_tx.c:381:6: warning: symbol 'ieee80211_qurey_ShortPreambleMode' was not declared. Should it be static?
drivers/staging/rtl8192u/ieee80211/ieee80211_tx.c:395:1: warning: symbol 'ieee80211_query_HTCapShortGI' was not declared. Should it be static?
Signed-off-by: Ana Rey <anarey@gmail.com>
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>

drivers/staging/rtl8192u/ieee80211/ieee80211_tx.c

@@ -378,7 +378,8 @@ static void ieee80211_tx_query_agg_cap(struct ieee80211_device *ieee,
 		return;
 }
 
-void ieee80211_qurey_ShortPreambleMode(struct ieee80211_device *ieee, cb_desc *tcb_desc)
+static void ieee80211_qurey_ShortPreambleMode(struct ieee80211_device *ieee,
+					      cb_desc *tcb_desc)
 {
 	tcb_desc->bUseShortPreamble = false;
 	if (tcb_desc->data_rate == 2)
@@ -391,7 +392,7 @@ void ieee80211_qurey_ShortPreambleMode(struct ieee80211_device *ieee, cb_desc *t
 	}
 	return;
 }
-void
+static void
 ieee80211_query_HTCapShortGI(struct ieee80211_device *ieee, cb_desc *tcb_desc)
 {
 	PRT_HIGH_THROUGHPUT		pHTInfo = ieee->pHTInfo;