board: rockchip: Add Pine64 SOQuartz on Model A

The Pine64 SOQuartz Model A board is a carrier board for the SOQuartz
CM4-compatible compute module. It exposes PCIe, ethernet, USB, HDMI,
CSI, DSI, eDP and a 40 pin GPIO header, and is powered by 12V DC.

Features tested with a SOQuartz 4GB v1.1 2022-07-11:
- SD-card boot
- eMMC boot
- PCIe/NVMe/AHCI
- 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>
diff --git a/board/pine64/quartz64_rk3566/MAINTAINERS b/board/pine64/quartz64_rk3566/MAINTAINERS
index 2e637bf..748ff50 100644
--- a/board/pine64/quartz64_rk3566/MAINTAINERS
+++ b/board/pine64/quartz64_rk3566/MAINTAINERS
@@ -6,7 +6,12 @@
 F:	include/configs/quartz64_rk3566.h
 F:	configs/quartz64-a-rk3566_defconfig
 F:	configs/quartz64-b-rk3566_defconfig
+F:	configs/soquartz-model-a-rk3566_defconfig
 F:	arch/arm/dts/rk3566-quartz64-a.dts
 F:	arch/arm/dts/rk3566-quartz64-a-u-boot.dtsi
 F:	arch/arm/dts/rk3566-quartz64-b.dts
 F:	arch/arm/dts/rk3566-quartz64-b-u-boot.dtsi
+F:	arch/arm/dts/rk3566-soquartz.dtsi
+F:	arch/arm/dts/rk3566-soquartz-u-boot.dtsi
+F:	arch/arm/dts/rk3566-soquartz-model-a.dts
+F:	arch/arm/dts/rk3566-soquartz-model-a-u-boot.dtsi