net: fec_mxc: support i.MX8ULP

Support i.MX8ULP in fec_mxc
Signed-off-by: NPeng Fan <peng.fan@nxp.com>
Reviewed-by: NRamon Fried <rfried.dev@gmail.com>

drivers/net/Kconfig

@@ -331,7 +331,7 @@ config FEC_MXC_MDIO_BASE
 
 config FEC_MXC
 	bool "FEC Ethernet controller"
-	depends on MX28 || MX5 || MX6 || MX7 || IMX8 || IMX8M || VF610
+	depends on MX28 || MX5 || MX6 || MX7 || IMX8 || IMX8M || IMX8ULP || VF610
 	help
 	  This driver supports the 10/100 Fast Ethernet controller for
 	  NXP i.MX processors.

drivers/net/fec_mxc.c

@@ -631,7 +631,7 @@ static int fec_init(struct eth_device *dev, struct bd_info *bd)
 	writel(0x00000000, &fec->eth->gaddr2);
 
 	/* Do not access reserved register */
-	if (!is_mx6ul() && !is_mx6ull() && !is_imx8() && !is_imx8m()) {
+	if (!is_mx6ul() && !is_mx6ull() && !is_imx8() && !is_imx8m() && !is_imx8ulp()) {
 		/* clear MIB RAM */
 		for (i = mib_ptr; i <= mib_ptr + 0xfc; i += 4)
 			writel(0, i);