arm: imx8ulp: add dummy imx_get_mac_from_fuse

Add imx_get_mac_from_fuse for enet build pass

Signed-off-by: Peng Fan <peng.fan@nxp.com>
diff --git a/arch/arm/mach-imx/imx8ulp/soc.c b/arch/arm/mach-imx/imx8ulp/soc.c
index e5985c4..0728cb9 100644
--- a/arch/arm/mach-imx/imx8ulp/soc.c
+++ b/arch/arm/mach-imx/imx8ulp/soc.c
@@ -532,3 +532,8 @@
 		;
 }
 #endif
+
+void imx_get_mac_from_fuse(int dev_id, unsigned char *mac)
+{
+	memset(mac, 0, 6);
+}