dwc_otg: Avoid the use of align_buf for short packets

Recent kernels (from 6.5) fail to boot on Pi0-3.

This has been tracked down to the call to:
ret = usb_get_std_status(hdev, USB_RECIP_DEVICE, 0, &hubstatus);

returning garbage in hubstatus (it gets the uninitialised contents of
a kmalloc buffer that is not overwritten as expected).

As we don't have strong evidence that this code path has ever worked,
and it is causing a clear problem currently, lets disable it to
allow wider use of newer kernels.

Signed-off-by: Dom Cobley <popcornmix@gmail.com>