board: rockchip: Add Pine64 SOQuartz on CM4-IO

The Pine64 SOQuartz compute module is mostly pin-compatible with the RPi
CM4 form factor. Therefore, it can slot into the official Raspberry Pi
CM4 IO carrier board. Add this configuration to U-Boot.

Features tested with a SOQuartz 4GB v1.1 2022-07-11:
- SD-card boot
- eMMC boot
- USB host

Device tree is imported from linux v6.4.

Co-developed-by: Nicolas Frattaroli <frattaroli.nicolas@gmail.com>
Signed-off-by: Nicolas Frattaroli <frattaroli.nicolas@gmail.com>
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>