ARM: dts: sun8i: Add board dts file for t3-cqa3t-bv3.

ARM: dts: sun8i: Add board dts file for t3-cqa3t-bv3.

The T3/R40/V40 using the same sdk and config file in allwinner
sdk, it seem they are the same SOC just with different name, so
compatible with R40.

The t3-cqa3t-bv3 based on Allwinner T3 SoC, it has various connectors,
leds, buttons, and sell on:
https://item.taobao.com/item.htm?spm=2013.1.w4023-4203040713.25.62704cce7UCgLS&id=557154455330

It features:
 - X-Powers AXP221s PMIC connected to i2c0
 - 1/2 GB DDR3 DRAM
 - 8 GB eMMC
 - 2x USB 2.0 hosts
 - 1x USB 2.0 OTG
 - 2 LVDS connectors
 - 24 bit RGB LCD connector
 - HDMI output
 - DVP camera interface (support 500w cmos camera)
 - GPIO connectors
 - 5 TTL uarts and 2 RS232 uarts
 - 1 RS485 connector
 - support i2c capacitive tp and usb infrared tp
 - boot control, reset and user buttons
 - 3.5mm headphone and 3.5mm mic jack
 - 100M RJ45
 - micro SD card slot
 - DC power jack
 - RCT power slot
 - 1 CVBS TVIN
 - 1 CVBS TVOUT
 - 2 customer leds
 - 1 buzzer
 - 1 minipcie
 - I2C output
 - SPI output
 - PCM output
 - wifi and bt connector reserved.

Board info can find here:
https://github.com/Axl-zhang/Allwinner-V40-T3-R40-manual

Signed-off-by: Hao Zhang <hao5781286@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>