questions: xhci_alloc_stream_ctx()

Signed-off-by: Xenia Ragiadakou <burzalodowa@gmail.com>
questions: xhci_free_stream_info()

Signed-off-by: Xenia Ragiadakou <burzalodowa@gmail.com>
questions: xhci_calculate_lpm_timeout()

Signed-off-by: Xenia Ragiadakou <burzalodowa@gmail.com>