pico-imx7d: Add initial support

Add the initial support for pico-imx7d board based on Wig Cheng's
source code.

Add support for eMMC, USB gadget, I2C, PMIC and Ethernet.

For more information about this board, please visit:
http://www.technexion.org/products/pico/pico-som/pico-imx7-emmc

Signed-off-by: Vanessa Maegima <vanessa.maegima@nxp.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
diff --git a/board/technexion/pico-imx7d/Kconfig b/board/technexion/pico-imx7d/Kconfig
new file mode 100644
index 0000000..f4ae18c
--- /dev/null
+++ b/board/technexion/pico-imx7d/Kconfig
@@ -0,0 +1,15 @@
+if TARGET_PICO_IMX7D
+
+config SYS_BOARD
+	default "pico-imx7d"
+
+config SYS_VENDOR
+	default "technexion"
+
+config SYS_SOC
+	default "mx7"
+
+config SYS_CONFIG_NAME
+	default "pico-imx7d"
+
+endif