staging: rtl8188eu: embedded function name style fixes

Replace a couple of function names embedded in trace messages
with __func__.  One of them had a typo anyway.
Signed-off-by: NIan Chard <ian@chard.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8188eu/core/rtw_cmd.c

@@ -1295,7 +1295,7 @@ void rtw_setstaKey_cmdrsp_callback(struct adapter *padapter,  struct cmd_obj *pc
 
 
 	if (psta == NULL) {
-		RT_TRACE(_module_rtl871x_cmd_c_, _drv_err_, ("\nERROR: rtw_setstaKey_cmdrsp_callback => can't get sta_info\n\n"));
+		RT_TRACE(_module_rtl871x_cmd_c_, _drv_err_, ("\nERROR: %s => can't get sta_info\n\n", __func__));
 		goto exit;
 	}
 exit:
@@ -1312,7 +1312,7 @@ void rtw_setassocsta_cmdrsp_callback(struct adapter *padapter,  struct cmd_obj *
 
 
 	if (psta == NULL) {
-		RT_TRACE(_module_rtl871x_cmd_c_, _drv_err_, ("\nERROR: setassocsta_cmdrsp_callbac => can't get sta_info\n\n"));
+		RT_TRACE(_module_rtl871x_cmd_c_, _drv_err_, ("\nERROR: %s => can't get sta_info\n\n", __func__));
 		goto exit;
 	}