board: ge: bx50v3: remove redundant targets

This replaces TARGET_GE_B{4,6,8}50V3 with common TARGET_GE_BX50V3.
The boards are identified automatically at runtime.

Signed-off-by: Ian Ray <ian.ray@ge.com>
Signed-off-by: Nandor Han <nandor.han@ge.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
diff --git a/arch/arm/mach-imx/mx6/Kconfig b/arch/arm/mach-imx/mx6/Kconfig
index 98ea1f5..12d08c4 100644
--- a/arch/arm/mach-imx/mx6/Kconfig
+++ b/arch/arm/mach-imx/mx6/Kconfig
@@ -167,18 +167,8 @@
 	bool "embestmx6boards"
 	select BOARD_LATE_INIT
 
-config TARGET_GE_B450V3
-	bool "General Electric B450v3"
-	select BOARD_LATE_INIT
-	select MX6Q
-
-config TARGET_GE_B650V3
-	bool "General Electric B650v3"
-	select BOARD_LATE_INIT
-	select MX6Q
-
-config TARGET_GE_B850V3
-	bool "General Electric B850v3"
+config TARGET_GE_BX50V3
+	bool "General Electric Bx50v3"
 	select BOARD_LATE_INIT
 	select MX6Q