global: Migrate CONFIG_FSL_SERDES2 to CFG

Perform a simple rename of CONFIG_FSL_SERDES2 to CFG_FSL_SERDES2

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/include/configs/MPC837XERDB.h b/include/configs/MPC837XERDB.h
index 9fc12da..07c989d 100644
--- a/include/configs/MPC837XERDB.h
+++ b/include/configs/MPC837XERDB.h
@@ -150,7 +150,7 @@
 
 /* SERDES */
 #define CFG_FSL_SERDES1	0xe3000
-#define CONFIG_FSL_SERDES2	0xe3100
+#define CFG_FSL_SERDES2	0xe3100
 
 /* I2C */
 #define CFG_SYS_I2C_NOPROBES		{ {0, 0x51} }