fsl/fman: define frame description command UPD

Defined frame description command FM_FD_CMD_UPD for
prepended data updating.
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Acked-by: Madalin Bucur <madalin.bucur@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/freescale/fman/fman.h

@@ -41,6 +41,7 @@
 /* Frame queue Context Override */
 #define FM_FD_CMD_FCO                   0x80000000
 #define FM_FD_CMD_RPD                   0x40000000  /* Read Prepended Data */
+#define FM_FD_CMD_UPD			0x20000000  /* Update Prepended Data */
 #define FM_FD_CMD_DTC                   0x10000000  /* Do L4 Checksum */
 
 /* TX-Port: Unsupported Format */