bcma: Add flush for BCMA_RESET_CTL write

Adds a missing read to flush the previous write (per the Broadcom SDK).
Signed-off-by: Nathan Hintz <nlhintz@hotmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/bcma/core.c

@@ -30,6 +30,7 @@ void bcma_core_disable(struct bcma_device *core, u32 flags)
 	udelay(10);
 
 	bcma_awrite32(core, BCMA_RESET_CTL, BCMA_RESET_CTL_RESET);
+	bcma_aread32(core, BCMA_RESET_CTL);
 	udelay(1);
 }
 EXPORT_SYMBOL_GPL(bcma_core_disable);