ARM: dts: imx7d-pico: Add initial support

Add the initial support for imx7d-pico board.

Add support for eMMC, USB host, USB device, PMIC, Ethernet and audio.

For more information about this board, please visit:
http://www.technexion.org/products/pico/pico-som/pico-imx7-emmcSigned-off-by: Vanessa Maegima <vanessa.maegima@nxp.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/Makefile

@@ -478,6 +478,7 @@ dtb-$(CONFIG_SOC_IMX7D) += \
 	imx7d-cl-som-imx7.dtb \
 	imx7d-colibri-eval-v3.dtb \
 	imx7d-nitrogen7.dtb \
+	imx7d-pico.dtb \
 	imx7d-sbc-imx7.dtb \
 	imx7d-sdb.dtb \
 	imx7d-sdb-sht11.dtb \