arm: mach-imx: Update MAC fuse for i.MX8MP

i.MX8MP has two ENET controllers, have to update the function to
enable loading two MAC addresses.

Signed-off-by: Ye Li <ye.li@nxp.com>
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
diff --git a/arch/arm/mach-imx/mac.c b/arch/arm/mach-imx/mac.c
index 3b1496b..9bb63d2 100644
--- a/arch/arm/mach-imx/mac.c
+++ b/arch/arm/mach-imx/mac.c
@@ -31,7 +31,7 @@
 
 	offset = is_mx6() ? MAC_FUSE_MX6_OFFSET : MAC_FUSE_MX7_OFFSET;
 	fuse = (struct imx_mac_fuse *)(ulong)(OCOTP_BASE_ADDR + offset);
-	has_second_mac = is_mx7() || is_mx6sx() || is_mx6ul() || is_mx6ull();
+	has_second_mac = is_mx7() || is_mx6sx() || is_mx6ul() || is_mx6ull() || is_imx8mp();
 
 	if (has_second_mac && dev_id == 1) {
 		u32 value = readl(&fuse->mac_addr2);