dwc3: uncondinationally enable Host IN Auto Retry

[bz]

Summary

Enable dwc3's auto retry feature. For IN transfers with crc errors
or internal overruns this will make the host reply with a
non-terminating retry ACK. I believe the hope was to improve
reliability after seeing occasional hiccups.

Obtained from: an old debugging patch
MFC after: 2 weeks

Test Plan

This mentioned debugging patch was running for months on my HC and
a rk3399 without noticing a regression at least. I went and looked
up the bit for the description.

Extracted from D35484 as requested by @mw.

[mw]

Thanks for splitting all the patches!