usb: cdns3: add quirk for enable runtime pm by default

[ Upstream commit 7cea9657756b2c83069a775c0671ff169bce456a ]

Some vendors (eg: NXP) may want to enable runtime pm by default for
power saving, add one quirk for it.

Reviewed-by: Jun Li <jun.li@nxp.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
3 files changed