usb: misc: onboard_dev: extend platform data to add power on delay field

Introduce dedicated field 'power_on_delay_us' in onboard platform data
and update its delay for USB5744 configuration. Hub itself requires some
delay after reset to get to state where configuration data is going to
be accepted. Without delay upcoming support for configuration via SMBUS
is reporting a failure on the first SMBus write.

i2c 2-002d: error -ENXIO: BYPASS_UDC_SUSPEND bit configuration failed

Similar delay is likely also required for default configuration but
because there is enough time (code execution) between reset and usage
of the hub any issue is not visible but it doesn't mean delay shouldn't
be reflected.

Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
Suggested-by: Matthias Kaehlcke <mka@chromium.org>
Link: https://lore.kernel.org/r/1725732196-70975-2-git-send-email-radhey.shyam.pandey@amd.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>