ARM i.MX53 enable LOCO board bootup

1. Add Kconfig and Makefile entries
2. Add board definition
3. enable uart and fec for LOCO board

Signed-off-by: Yong Shen <yong.shen@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
diff --git a/arch/arm/mach-mx5/Kconfig b/arch/arm/mach-mx5/Kconfig
index 7c85853..de4fa992f 100644
--- a/arch/arm/mach-mx5/Kconfig
+++ b/arch/arm/mach-mx5/Kconfig
@@ -141,6 +141,14 @@
 	  Include support for MX53 SMD platform. This includes specific
 	  configurations for the board and its peripherals.
 
+config MACH_MX53_LOCO
+	bool "Support MX53 LOCO platforms"
+	select SOC_IMX53
+	select IMX_HAVE_PLATFORM_IMX_UART
+	help
+	  Include support for MX53 LOCO platform. This includes specific
+	  configurations for the board and its peripherals.
+
 config MACH_MX50_RDP
 	bool "Support MX50 reference design platform"
 	depends on BROKEN