[U-Boot] [U-Boot, v7, 2/8] usb: host: xhci-rockchip: use fixed regulator to control vbus

[Philipp Tomsich]

> Use fixed regulator to control the voltage of vbus. Enable vbus
> supply when usb start and disable vbus supply when usb stop.
> 
> Signed-off-by: Meng Dongyang <daniel.meng at rock-chips.com>
> Acked-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>
> ---
> 
> Changes in v7: None
> Changes in v6:
> - Remove #ifdef DM_REGULATOR and DM_USB due to the addition in Kconfig
> 
> Changes in v5:
> - Propagate the return value of setting VBus and print error when failed
> 
> Changes in v4:
> - Splited from patch [Uboot,v3,04/10]
> - Define set vbus as empty function if the macros aren't set
> 
> Changes in v3: None
> Changes in v2:
> - Use fixed regulator to control vbus instead of gpio
> 
>  drivers/usb/host/xhci-rockchip.c | 36 ++++++++++++++++++------------------
>  1 file changed, 18 insertions(+), 18 deletions(-)
> 

Reviewed-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>