uboot-imx

MLK-21055 usb: dwc3: gadget: disable U1 and U2

Currenlty U1 and U2 low power modes are allowed in device mode.
Allowing U1 and U2 low power modes during data transfers in
device mode is causing U1 exit failure on some USB3 host: which
will transite to SS.inactive instead of U0, then host will send
warm reset and ultimately result in reenumeration. This is observed
on UUU tool with some PC host. Hence disable U1 and U2 low power
modes for now.

USB3 spec 7.5.10.4.2 Exit from Recovery.Configuration
The port shall transition to eSS.Inactive when the following
conditions are met:
1. Either the Ux_EXIT_TIMER or the 6-ms timer
   (tRecoveryConfigurationTimeout) times out.
2. For a downstream port, the transition to Recovery is not to
   attempt a Hot Reset.

Signed-off-by: Li Jun <jun.li@nxp.com>
(cherry picked from commit ae0cdc741f7313398539f7b576ced73871f6cd71)