[PATCH v2 4/9] arm64: dts: imx8mm: add wakeup-source for usb phy

[Marco Felsch]

On 26-01-17, Frank Li wrote:
> From: Li Jun <jun.li at nxp.com>
> 
> USB phy can be wakeup source to support wakeup system from USB.

Was USB wakeup tested? That beeing said, marking the device as
wakeup-src is fine.

> Signed-off-by: Li Jun <jun.li at nxp.com>
> Signed-off-by: Frank Li <Frank.Li at nxp.com>

Reviewed-by: Marco Felsch <m.felsch at pengutronix.de>