board: rockchip: Add Pine64 PineTab2

The Pine64 PineTab2 is a tablet computer based on the Rockchip RK3566
SoC. The table features 4/8 GB LPDDR4 RAM and 64/128 GB eMMC storage.

Features tested on a Pine64 PineTab2 8GB v2.0:
- SD-card boot
- eMMC boot
- SPI Flash boot
- USB host

Device tree is imported from linux maintainer branch v6.9-armsoc/dts64,
commit 1b7e19448f8f ("arm64: dts: rockchip: Add devicetree for Pine64
PineTab2").

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 6b75b35..37b8c1e 100644
--- a/board/pine64/quartz64_rk3566/MAINTAINERS
+++ b/board/pine64/quartz64_rk3566/MAINTAINERS
@@ -21,3 +21,14 @@
 F:	arch/arm/dts/rk3566-soquartz-cm4-u-boot.dtsi
 F:	arch/arm/dts/rk3566-soquartz-model-a.dts
 F:	arch/arm/dts/rk3566-soquartz-model-a-u-boot.dtsi
+
+PINETAB2-RK3566
+M:	Jonas Karlman <jonas@kwiboo.se>
+S:	Maintained
+F:	configs/pinetab2-rk3566_defconfig
+F:	arch/arm/dts/rk3566-pinetab2.dtsi
+F:	arch/arm/dts/rk3566-pinetab2-u-boot.dtsi
+F:	arch/arm/dts/rk3566-pinetab2-v0.1.dts
+F:	arch/arm/dts/rk3566-pinetab2-v0.1-u-boot.dtsi
+F:	arch/arm/dts/rk3566-pinetab2-v2.0.dts
+F:	arch/arm/dts/rk3566-pinetab2-v2.0-u-boot.dtsi