[PATCH] bcm43xx: optimization of DMA bitfields

Convert the bitfields in the bcm43xx DMA code to properly
aligned u8 booleans. These flags are accessed in the DMA
hotpath, so it's a good idea to waste a few bytes of memory
for the sake of speed by not requiring masking (and probably
shifting) of the bitfields.
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-Off-By: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/bcm43xx/bcm43xx_dma.h

@@ -235,9 +235,12 @@ struct bcm43xx_dmaring {
 	u16 mmio_base;
 	/* DMA controller index number (0-5). */
 	int index;
-	u8 tx:1,	/* TRUE, if this is a TX ring. */
-	   dma64:1,	/* TRUE, if 64-bit DMA is enabled (FALSE if 32bit). */
-	   suspended:1;	/* TRUE, if transfers are suspended on this ring. */
+	/* Boolean. Is this a TX ring? */
+	u8 tx;
+	/* Boolean. 64bit DMA if true, 32bit DMA otherwise. */
+	u8 dma64;
+	/* Boolean. Are transfers suspended on this ring? */
+	u8 suspended;
 	struct bcm43xx_private *bcm;
 #ifdef CONFIG_BCM43XX_DEBUG
 	/* Maximum number of used slots. */