arm: imx: Add support for GE Bx50v3 boards

Add support for GE B450v3, B650v3 and B850v3 boards. The boards
are based on Advantech BA16 module which has a i.MX6D processor.
The boards support:
 - FEC Ethernet
 - USB Ports
 - SDHC and MMC boot
 - SPI NOR
 - LVDS and HDMI display

Basic information about the module:
 - Module manufacturer: Advantech
 - CPU: Freescale ARM Cortex-A9 i.MX6D
 - SPECS:
     Up to 2GB Onboard DDR3 Memory;
     Up to 16GB Onboard eMMC NAND Flash
     Supports OpenGL ES 2.0 and OpenVG 1.1
     HDMI, 24-bit LVDS
     1x UART, 2x I2C, 8x GPIO,
     4x Host USB 2.0 port, 1x USB OTG port,
     1x micro SD (SDHC),1x SDIO, 1x SATA II,
     1x 10/100/1000 Mbps Ethernet, 1x PCIe X1 Gen2

Signed-off-by: Akshay Bhat <akshay.bhat@timesys.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
diff --git a/arch/arm/cpu/armv7/mx6/Kconfig b/arch/arm/cpu/armv7/mx6/Kconfig
index c72a150..dc0894a 100644
--- a/arch/arm/cpu/armv7/mx6/Kconfig
+++ b/arch/arm/cpu/armv7/mx6/Kconfig
@@ -60,6 +60,18 @@
 config TARGET_EMBESTMX6BOARDS
 	bool "embestmx6boards"
 
+config TARGET_GE_B450V3
+	bool "General Electric B450v3"
+	select MX6Q
+
+config TARGET_GE_B650V3
+	bool "General Electric B650v3"
+	select MX6Q
+
+config TARGET_GE_B850V3
+	bool "General Electric B850v3"
+	select MX6Q
+
 config TARGET_GW_VENTANA
 	bool "gw_ventana"
 	select SUPPORT_SPL
@@ -158,6 +170,7 @@
 config SYS_SOC
 	default "mx6"
 
+source "board/ge/bx50v3/Kconfig"
 source "board/aristainetos/Kconfig"
 source "board/bachmann/ot1200/Kconfig"
 source "board/barco/platinum/Kconfig"