dts: rock64: allow SD card voltage switching (UHS-I)#51

mcerveny wants to merge 1 commit intoayufan-rock64:release-4.4.185ayufan-rock64/linux-kernel:release-4.4.185from

mcerveny:ayufan-release-4.4.185mcerveny/rockchip-linux:ayufan-release-4.4.185Copy head branch name to clipboard