arm64: dts: rockchip: correct vqmmc voltage for rk3399 platforms

[klaus.goger at theobroma-systems.com]

Hi Shawn,

> On 17.10.2017, at 05:38, Shawn Lin <shawn.lin at rock-chips.com> wrote:
> 
> The vcc_sd or vcc_sdio used for IO voltage for sdmmc and sdio
> interface on rk3399 platform have a limitation that it can't be
> larger than 3.0v, otherwise it has a potential risk for the chip.
> Correct all of them.

For rk3399-puma.dtsi
Tested-by: Klaus Goger <klaus.goger at theobroma-systems.com>

— 
Klaus