staging:rtl8192u: Rename ISR_TxBcnErr bit definition - Style

Rename the bit definition ISR_TxBcnErr to ISR_TX_BCN_ERR. This change
clears the checkpatch issue with CamelCase naming. The change is purely
a coding style change which should not impact runtime code execution.
Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192u/r819xU_cmdpkt.c

@@ -252,7 +252,7 @@ static void cmpk_handle_interrupt_status(struct net_device *dev, u8 *pmsg)
 		if (rx_intr_status.interrupt_status & ISR_TX_BCN_OK) {
 			priv->ieee80211->bibsscoordinator = true;
 			priv->stats.txbeaconokint++;
-		} else if (rx_intr_status.interrupt_status & ISR_TxBcnErr) {
+		} else if (rx_intr_status.interrupt_status & ISR_TX_BCN_ERR) {
 			priv->ieee80211->bibsscoordinator = false;
 			priv->stats.txbeaconerr++;
 		}

drivers/staging/rtl8192u/r819xU_cmdpkt.h

@@ -11,7 +11,7 @@
 
 /* 2008/05/08 amy For USB constant. */
 #define ISR_TX_BCN_OK		BIT(27)		/* Transmit Beacon OK */
-#define ISR_TxBcnErr		BIT(26)		/* Transmit Beacon Error */
+#define ISR_TX_BCN_ERR		BIT(26)		/* Transmit Beacon Error */
 #define ISR_BcnTimerIntr	BIT(13)		/* Beacon Timer Interrupt */