rt2800: 5592: TXWI & RXWI descriptors size

Based on:
TXWI_STRUC
RXWI_STRUC

from:
DPO_RT5572_LinuxSTA_2.6.1.3_20121022/include/chip/rtmp_mac.h

Signed-off-by: Stanislaw Gruszka <stf_xl@wp.pl>
Tested-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/rt2x00/rt2800pci.c b/drivers/net/wireless/rt2x00/rt2800pci.c
index 80cf8d7..f732ded 100644
--- a/drivers/net/wireless/rt2x00/rt2800pci.c
+++ b/drivers/net/wireless/rt2x00/rt2800pci.c
@@ -729,6 +729,11 @@
 	 * Process the RXWI structure that is at the start of the buffer.
 	 */
 	rt2800_process_rxwi(entry, rxdesc);
+
+	/*
+	 * Remove RXWI descriptor from start of buffer.
+	 */
+	skb_pull(entry->skb, RXWI_DESC_SIZE);
 }
 
 /*