Revert "xhci: move port specific items such as state completions to port structure"

This reverts commit 63f0e79c which is
commit 2996e9fc upstream.

It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.

Bug: 161946584
Change-Id: I6125aa8ecec382d632291bf144e02bdc700c7228
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>