global: Migrate CONFIG_FEC_MXC_PHYADDR to CFG

Perform a simple rename of CONFIG_FEC_MXC_PHYADDR to CFG_FEC_MXC_PHYADDR

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/include/configs/aristainetos2.h b/include/configs/aristainetos2.h
index a6e9d2b..be1478e 100644
--- a/include/configs/aristainetos2.h
+++ b/include/configs/aristainetos2.h
@@ -26,7 +26,7 @@
 /* MMC Configs */
 #define CFG_SYS_FSL_ESDHC_ADDR      USDHC1_BASE_ADDR
 
-#define CONFIG_FEC_MXC_PHYADDR		0
+#define CFG_FEC_MXC_PHYADDR		0
 
 #ifdef CONFIG_IMX_HAB
 #define HAB_EXTRA_SETTINGS \