arm: mx50: add mx50 reference design board support

Add basic function and uart device support.

Signed-off-by: Richard Zhao <richard.zhao@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 d2e0f98..7c31757 100644
--- a/arch/arm/mach-mx5/Kconfig
+++ b/arch/arm/mach-mx5/Kconfig
@@ -111,4 +111,16 @@
 	  Include support for Genesi Efika MX nettop. This includes specific
 	  configurations for the board and its peripherals.
 
+config MACH_MX50_RDP
+	bool "Support MX50 reference design platform"
+	depends on BROKEN
+	select SOC_IMX50
+	select IMX_HAVE_PLATFORM_IMX_I2C
+	select IMX_HAVE_PLATFORM_IMX_UART
+	select IMX_HAVE_PLATFORM_SDHCI_ESDHC_IMX
+	select IMX_HAVE_PLATFORM_SPI_IMX
+	help
+	  Include support for MX50 reference design platform (RDP) board. This
+	  includes specific configurations for the board and its peripherals.
+
 endif