board: Add uCRobotics Bubblegum-96 board support

This commit adds uCRobotics Bubblegum-96 board support. This board is
one of the 96Boards Consumer Edition platform based on Actions Semi
S900 SoC.

Features:
- Actions Semi S900 SoC (4xCortex A53, Power VR G6230 GPU)
- 2GiB 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, 6 LED, 3 buttons

U-Boot will be loaded by ATF at EL2 execution level. Relevant driver
support will be added in further commits.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 46882bd..82140ef 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1453,6 +1453,7 @@
 source "board/spear/x600/Kconfig"
 source "board/st/stv0991/Kconfig"
 source "board/tcl/sl50/Kconfig"
+source "board/ucRobotics/bubblegum_96/Kconfig"
 source "board/birdland/bav335x/Kconfig"
 source "board/timll/devkit3250/Kconfig"
 source "board/toradex/colibri_pxa270/Kconfig"
diff --git a/arch/arm/dts/bubblegum_96.dts b/arch/arm/dts/bubblegum_96.dts
new file mode 100644
index 0000000..4e34eba
--- /dev/null
+++ b/arch/arm/dts/bubblegum_96.dts
@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// Device Tree Source for Bubblegum-96
+//
+// Copyright (C) 2015 Actions Semi Co., Ltd.
+// Copyright (C) 2018 Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
+
+/dts-v1/;
+#include "s900.dtsi"
+
+/ {
+	model = "Bubblegum-96";
+	compatible = "ucrobotics,bubblegum-96", "actions,s900";
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x0 0x0 0x0 0x80000000>;
+	};
+};
diff --git a/arch/arm/mach-owl/Kconfig b/arch/arm/mach-owl/Kconfig
index f695c16..199e772 100644
--- a/arch/arm/mach-owl/Kconfig
+++ b/arch/arm/mach-owl/Kconfig
@@ -3,4 +3,25 @@
 config SYS_SOC
 	default "owl"
 
+choice
+        prompt "Actions Semi OWL SoCs board select"
+        optional
+
+config TARGET_BUBBLEGUM_96
+	bool "96Boards Bubblegum-96"
+	help
+	  Support for 96Boards Bubblegum-96. This board complies with
+	  96Board Consumer Edition Specification. Features:
+	  - Actions Semi S900 SoC (4xCortex A53, Power VR G6230 GPU)
+	  - 2GiB 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, 6 LED, 3 buttons
+
+endchoice
+
+source "board/ucRobotics/bubblegum_96/Kconfig"
+
 endif