boards: Add support for WaRP7 board

This patch is to add support for the WaRP7 board which has an i.MX7
Solo SoC.
The Zephyr is running on the Cortex M4 core and the following features
were validated on this board:

* GPIO: User Switch detection and sensors interrupt
* UART: Zephyr console
* I2C: Communication with fxos8700 and fxas21002 sensors

Signed-off-by: Diego Sueiro <[email protected]>

Author: diegosueiro

boards/arm/warp7_m4/CMakeLists.txt

@@ -0,0 +1,9 @@
+#
+# Copyright (c) 2017, NXP
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+zephyr_library()
+zephyr_library_include_directories(${ZEPHYR_BASE}/drivers)
+zephyr_library_sources(pinmux.c)

boards/arm/warp7_m4/Kconfig.board

@@ -0,0 +1,15 @@
+# Kconfig - WaRP7 iMX7S M4 board
+#
+# Copyright (c) 2018, Diego Sueiro
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+config BOARD_WARP7_M4
+	bool "WaRP7 iMX7 Solo"
+	depends on SOC_SERIES_IMX7_M4
+	select SOC_PART_NUMBER_MCIMX7S3DVK08SA
+	select HAS_DTS_I2C
+	select HAS_DTS_I2C_DEVICE
+	select HAS_DTS_GPIO
+	select HAS_DTS_GPIO_DEVICE

boards/arm/warp7_m4/Kconfig.defconfig

@@ -0,0 +1,51 @@
+# Kconfig - WaRP7 iMX7S M4 board
+#
+# Copyright (c) 2018, Diego Sueiro
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+if BOARD_WARP7_M4
+
+config BOARD
+	default "warp7_m4"
+
+if GPIO_IMX
+
+config GPIO_IMX_PORT_7
+	def_bool y
+
+endif # GPIO_IMX
+
+if UART_IMX
+
+config UART_IMX_UART_2
+	def_bool y
+
+config UART_IMX_UART_6
+	def_bool y
+
+endif # UART_IMX
+
+if I2C_IMX
+
+config I2C_4
+	def_bool y
+
+endif # I2C_IMX
+
+if FXOS8700
+
+config FXOS8700_DRDY_INT1
+	def_bool y
+
+endif # FXOS8700
+
+if FXAS21002
+
+config FXAS21002_DRDY_INT1
+	def_bool y
+
+endif # FXAS21002
+
+endif # BOARD_WARP7_M4

boards/arm/warp7_m4/board.h

@@ -0,0 +1,12 @@
+/*
+ * Copyright (c) 2018, Diego Sueiro
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef __INC_BOARD_H
+#define __INC_BOARD_H
+
+#include <soc.h>
+
+#endif /* __INC_BOARD_H */