net: fec_mxc: Add support for Vybrid VF610

This patch adds FEC support for Vybrid VF610 platform.

In function fec_open(), RCR register is only set as RGMII mode. But RCR
register should be set as RMII mode for VF610 platform.
This configuration is already done in fec_reg_setup(), so this piece of
code could just leave untouched the FEC_RCNTRL_RGMII / FEC_RCNTRL_RMII /
FEC_RCNTRL_MII_MODE bits.

Signed-off-by: Alison Wang <b18965@freescale.com>
Reviewed-by: Benoit Thebaudeau <benoit.thebaudeau@advansee.com>
Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>

drivers/net/fec_mxc.c

@@ -516,9 +516,7 @@ static int fec_open(struct eth_device *edev)
 #ifdef FEC_QUIRK_ENET_MAC
 	{
 		u32 ecr = readl(&fec->eth->ecntrl) & ~FEC_ECNTRL_SPEED;
-		u32 rcr = (readl(&fec->eth->r_cntrl) &
-				~(FEC_RCNTRL_RMII | FEC_RCNTRL_RMII_10T)) |
-				FEC_RCNTRL_RGMII | FEC_RCNTRL_MII_MODE;
+		u32 rcr = readl(&fec->eth->r_cntrl) & ~FEC_RCNTRL_RMII_10T;
 		if (speed == _1000BASET)
 			ecr |= FEC_ECNTRL_SPEED;
 		else if (speed != _100BASET)