net: fec_mxc: Add support for mx6 solo-lite

Similarly as mx25 and mx53, mx6solo-lite needs to setup the MII gasket for RMII
mode.

Add support for mx6solo-lite.
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>

drivers/net/fec_mxc.c

@@ -453,7 +453,7 @@ static int fec_open(struct eth_device *edev)
 	 */
 	writel(readl(&fec->eth->ecntrl) | FEC_ECNTRL_ETHER_EN,
 		&fec->eth->ecntrl);
-#if defined(CONFIG_MX25) || defined(CONFIG_MX53)
+#if defined(CONFIG_MX25) || defined(CONFIG_MX53) || defined(CONFIG_MX6SL)
 	udelay(100);
 	/*
 	 * setup the MII gasket for RMII mode

drivers/net/fec_mxc.h

@@ -135,7 +135,7 @@ struct ethernet_regs {
 
 	uint32_t res14[7];		/* MBAR_ETH + 0x2E4-2FC */
 
-#if defined(CONFIG_MX25) || defined(CONFIG_MX53)
+#if defined(CONFIG_MX25) || defined(CONFIG_MX53) || defined(CONFIG_MX6SL)
 	uint16_t miigsk_cfgr;		/* MBAR_ETH + 0x300 */
 	uint16_t res15[3];		/* MBAR_ETH + 0x302-306 */
 	uint16_t miigsk_enr;		/* MBAR_ETH + 0x308 */
@@ -202,7 +202,7 @@ struct ethernet_regs {
 #define FEC_X_DES_ACTIVE_TDAR		0x01000000
 #define FEC_R_DES_ACTIVE_RDAR		0x01000000
 
-#if defined(CONFIG_MX25) || defined(CONFIG_MX53)
+#if defined(CONFIG_MX25) || defined(CONFIG_MX53) || defined(CONFIG_MX6SL)
 /* defines for MIIGSK */
 /* RMII frequency control: 0=50MHz, 1=5MHz */
 #define MIIGSK_CFGR_FRCONT		(1 << 6)