arm64: dts: rockchip: eMMC additions for rk3328-roc-cc

The eMMC 5.x that Libre Computer provide for their boards supports HS200 mode.
The support is already included in the dts for their newest board:

La Frite (AML-S805X-AC)
dts: arch/arm64/boot/dts/amlogic/meson-gxl-s805x-libretech-ac.dts

That same eMMC is supported in the ROC-RK3328-CC:
https://www.loverpi.com/products/libre-computer-board-emmc-5-x-module



This increases the speed of the eMMC significantly.

Signed-off-by: Leonidas P. Papadakos <papadakospan@gmail.com>
[added supplies as suggested by Leonidas]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>