vehicle v20 evb, VCCIO is 3V3, So limit sdio clk to 50M for wifi.
when system suspend keep vcc_3v3_s0 on avoid wifi chip crash.
Change-Id: I1310b7a3ca0d7e6e7f1ccc6d8d3183091db83506
Signed-off-by: Xu Xuehui <xxh@rock-chips.com>
add vehicle-evb-v20 dts file for first time
Signed-off-by: Oliver Peng <oliver.peng@rock-chips.com>
Change-Id: If48fa4fee974d84c99989e3014651fc8aacf53e0