arm/fsl-ls: Add CONFIG_OF_STDOUT_VIA_ALIAS

This will allow OF-based earlycon to be used once the appropriate
aliases are added to the device tree and kernel support is fixed.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>

include/configs/ls1021aqds.h

@@ -658,6 +658,7 @@ unsigned long get_board_ddr_clk(void);
 
 #define CONFIG_OF_LIBFDT
 #define CONFIG_OF_BOARD_SETUP
+#define CONFIG_OF_STDOUT_VIA_ALIAS
 #define CONFIG_CMD_BOOTZ
 
 #define CONFIG_MISC_INIT_R

include/configs/ls1021atwr.h

@@ -504,6 +504,7 @@
 
 #define CONFIG_OF_LIBFDT
 #define CONFIG_OF_BOARD_SETUP
+#define CONFIG_OF_STDOUT_VIA_ALIAS
 #define CONFIG_CMD_BOOTZ
 
 #define CONFIG_MISC_INIT_R

include/configs/ls2085a_common.h

@@ -46,6 +46,7 @@
 /* Flat Device Tree Definitions */
 #define CONFIG_OF_LIBFDT
 #define CONFIG_OF_BOARD_SETUP
+#define CONFIG_OF_STDOUT_VIA_ALIAS
 
 /* new uImage format support */
 #define CONFIG_FIT