mx53ard: Place machine ID into board config

Let common code set the machine ID.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
diff --git a/board/freescale/mx53ard/mx53ard.c b/board/freescale/mx53ard/mx53ard.c
index 6e3360b..c89da13 100644
--- a/board/freescale/mx53ard/mx53ard.c
+++ b/board/freescale/mx53ard/mx53ard.c
@@ -278,7 +278,6 @@
 
 int board_init(void)
 {
-	gd->bd->bi_arch_number = MACH_TYPE_MX53_ARD;
 	/* address of boot parameters */
 	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
 
diff --git a/include/configs/mx53ard.h b/include/configs/mx53ard.h
index c0b8d6a..26fc219 100644
--- a/include/configs/mx53ard.h
+++ b/include/configs/mx53ard.h
@@ -29,6 +29,8 @@
 #define CONFIG_DISPLAY_CPUINFO
 #define CONFIG_DISPLAY_BOARDINFO
 
+#define CONFIG_MACH_TYPE	MACH_TYPE_MX53_ARD
+
 #include <asm/arch/imx-regs.h>
 
 #define CONFIG_CMDLINE_TAG			/* enable passing of ATAGs */