mx6qsabreauto: Change mmcroot so it works out of box

The mmcroot setting vary between mx6qsabreauto and mx6qsabresd so we
move this to the board configuration file.

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Acked-by: Fabio Estevam <fabio.estevam@freescale.com>

include/configs/mx6qsabre_common.h

@@ -86,7 +86,7 @@
 	"initrd_high=0xffffffff\0" \
 	"mmcdev=0\0" \
 	"mmcpart=1\0" \
-	"mmcroot=/dev/mmcblk1p2 rootwait rw\0" \
+	"mmcroot=" CONFIG_MMCROOT " rootwait rw\0" \
 	"mmcargs=setenv bootargs console=${console},${baudrate} " \
 		"root=${mmcroot}\0" \
 	"loadbootscript=" \

include/configs/mx6qsabreauto.h

@@ -1,7 +1,7 @@
 /*
  * Copyright (C) 2012 Freescale Semiconductor, Inc.
  *
- * Configuration settings for the Freescale i.MX6Q SabreSD board.
+ * Configuration settings for the Freescale i.MX6Q SabreAuto board.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
@@ -15,6 +15,7 @@
 #define CONFIG_MACH_TYPE	3529
 #define CONFIG_MXC_UART_BASE	UART4_BASE
 #define CONFIG_CONSOLE_DEV		"ttymxc3"
+#define CONFIG_MMCROOT			"/dev/mmcblk0p2"
 #define PHYS_SDRAM_SIZE		(2u * 1024 * 1024 * 1024)
 
 #include "mx6qsabre_common.h"

include/configs/mx6qsabresd.h

@@ -20,6 +20,7 @@
 #define CONFIG_MACH_TYPE	3980
 #define CONFIG_MXC_UART_BASE	UART1_BASE
 #define CONFIG_CONSOLE_DEV		"ttymxc0"
+#define CONFIG_MMCROOT			"/dev/mmcblk1p2"
 #define PHYS_SDRAM_SIZE		(1u * 1024 * 1024 * 1024)
 
 #include "mx6qsabre_common.h"