board: Add Qualcomm Dragonboard 410C support

This commit add support for 96Boards Dragonboard410C.
It is board based on APQ8016 Qualcomm SoC, complying with
96boards specification.
Features (present out of the box):
- 4x Cortex A53 (ARMv8)
- 2x USB Host port
- 1x USB Device port
- 4x LEDs
- 1x HDMI connector
- 1x uSD connector
- 3x buttons (Power, Vol+, Vol-/Reset)
- WIFI, Bluetooth with integrated antenna
- 8GiB eMMC

U-Boot boots chained with fastboot in 64-bit mode.
For detailed build instructions see readme.txt in board directory.

Signed-off-by: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
Tested-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/mach-snapdragon/Kconfig b/arch/arm/mach-snapdragon/Kconfig
index 156e733..dc7ba21 100644
--- a/arch/arm/mach-snapdragon/Kconfig
+++ b/arch/arm/mach-snapdragon/Kconfig
@@ -3,4 +3,24 @@
 config SYS_SOC
 	default "snapdragon"
 
+choice
+	prompt "Snapdragon board select"
+
+config TARGET_DRAGONBOARD410C
+	bool "96Boards Dragonboard 410C"
+	help
+	  Support for 96Boards Dragonboard 410C. This board complies with
+	  96Board Open Platform Specifications. Features:
+	  - Qualcomm Snapdragon 410C SoC - APQ8016 (4xCortex A53, Adreno 306)
+	  - 1GiB RAM
+	  - 8GiB eMMC, uSD slot
+	  - WiFi, Bluetooth and GPS module
+	  - 2x Host, 1x Device USB port
+	  - HDMI
+	  - 20-pin low speed and 40-pin high speed expanders, 4 LED, 3 buttons
+
+endchoice
+
+source "board/qualcomm/dragonboard410c/Kconfig"
+
 endif