drivers: usb_dc_native_posix: rework handle_usb_control/handle_usb_data

Use pointer to struct usb_ep_ctrl_prv, which allows to remove
a few variables and simplifies subsequent improvements.

Use consistently ep_idx in handle_usb_control() instead of
ntohl(hdr->common.ep).

Revise logging so that it is clearer what event is being processed.

Signed-off-by: Johann Fischer <johann.fischer@nordicsemi.no>
1 file changed