board: qualcomm: Add support for QCS404 EVB

Add support for Qualcomm QCS404 SoC based evaluation board.

Features:
- Qualcomm Snapdragon QCS404 SoC
- 1GiB RAM
- 8GiB eMMC, uSD slot

U-boot is chain loaded by ABL in 64-bit mode as part of boot.img.
For detailed build and boot instructions, refer to
doc/board/qualcomm/qcs404.rst.

Signed-off-by: Sumit Garg <sumit.garg@linaro.org>
diff --git a/arch/arm/mach-snapdragon/Kconfig b/arch/arm/mach-snapdragon/Kconfig
index cb53dc8..0927333 100644
--- a/arch/arm/mach-snapdragon/Kconfig
+++ b/arch/arm/mach-snapdragon/Kconfig
@@ -69,11 +69,22 @@
 	select SDM845
 	select DM_ETH if NET
 
+config TARGET_QCS404EVB
+	bool "Qualcomm Technologies, Inc. QCS404 EVB"
+	select LINUX_KERNEL_IMAGE_HEADER
+	help
+	  Support for Qualcomm Technologies, Inc. QCS404 evaluation board.
+	  Features:
+	  - Qualcomm Snapdragon QCS404 SoC
+	  - 1GiB RAM
+	  - 8GiB eMMC, uSD slot
+
 endchoice
 
 source "board/qualcomm/dragonboard410c/Kconfig"
 source "board/qualcomm/dragonboard820c/Kconfig"
 source "board/qualcomm/dragonboard845c/Kconfig"
 source "board/samsung/starqltechn/Kconfig"
+source "board/qualcomm/qcs404-evb/Kconfig"
 
 endif