rp2040: fix host SET_REPORT (and any OUT-data control xfer) sending DATA0 instead of DATA1

hcd_edpt_xfer() previously reset ep->next_pid to 1 only when the control
endpoint direction changed between stages. That handled IN-data control
transfers (e.g. GET_REPORT, GET_DESCRIPTOR) where SETUP is OUT and DATA is
IN, but not OUT-data class requests like SET_REPORT, where SETUP and DATA
are both OUT and the direction-change check is false. ep->next_pid was
left at 0 from hcd_edpt_open(), so the DATA stage went on the wire as
DATA0 when the device expected DATA1. Strict devices (observed: Elgato
Stream Deck) treat this as a protocol violation and disconnect.

Key off "endpoint 0" instead of "direction changed", restoring the
previous behavior. Interrupt/bulk endpoints take the ep->interrupt_num > 0
branch above and never reach this code, so they are unaffected.

0 files changed, 0 insertions, 0 deletions