global: Migrate CONFIG_SH_ETHER_PHY_MODE to CFG

Perform a simple rename of CONFIG_SH_ETHER_PHY_MODE to CFG_SH_ETHER_PHY_MODE

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/include/configs/silk.h b/include/configs/silk.h
index 005eed1..21100c4 100644
--- a/include/configs/silk.h
+++ b/include/configs/silk.h
@@ -24,7 +24,7 @@
 /* SH Ether */
 #define CONFIG_SH_ETHER_USE_PORT	0
 #define CFG_SH_ETHER_PHY_ADDR	0x1
-#define CONFIG_SH_ETHER_PHY_MODE PHY_INTERFACE_MODE_RMII
+#define CFG_SH_ETHER_PHY_MODE PHY_INTERFACE_MODE_RMII
 #define CFG_SH_ETHER_CACHE_WRITEBACK
 #define CFG_SH_ETHER_CACHE_INVALIDATE
 #define CFG_SH_ETHER_ALIGNE_SIZE	64