staging: rtl8192u: fix incorrect mask and shift on u8 data

The cfg_action bit comes from the high bit of pmsg[4] so the
current mask and shift are in correct and always result in
zero.  Fix this by using the correct mask and shif to get the
correct cfg_action bit value.

Detected by CoverityScan, CID#142890 ("Operands don't affect result")

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192u/r819xU_cmdpkt.c

@@ -294,7 +294,7 @@ static void cmpk_handle_query_config_rx(struct net_device *dev, u8 *pmsg)
 	 * windows OS. So we have to read the content byte by byte or transfer
 	 * endian type before copy the message copy.
 	 */
-	rx_query_cfg.cfg_action		= (pmsg[4] & 0x80000000) >> 31;
+	rx_query_cfg.cfg_action		= (pmsg[4] & 0x80) >> 7;
 	rx_query_cfg.cfg_type		= (pmsg[4] & 0x60) >> 5;
 	rx_query_cfg.cfg_size		= (pmsg[4] & 0x18) >> 3;
 	rx_query_cfg.cfg_page		= (pmsg[6] & 0x0F) >> 0;