arm64: dts: renesas: Introduce r8a774a1-beacon-rzg2m-kit

Beacon EmebeddedWorks, formerly Logic PD is introducing a new
SOM and development kit based on the RZ/G2M SoC from Renesas.

The SOM supports eMMC, WiFi and Bluetooth, along with a Cat-M1
cellular radio.

The Baseboard has Ethernet, USB, HDMI, stereo audio in and out,
along with a variety of push buttons and LED's, and support for
a parallel RGB and an LVDS display.

Signed-off-by: Adam Ford <aford173@gmail.com>
Link: https://lore.kernel.org/r/20200715140622.1295370-1-aford173@gmail.com


Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>