USB: fix resource leak in xhci power loss path

USB: fix resource leak in xhci power loss path

Some more data structures must be freed and counters
reset if an XHCI controller has lost power. The failure
to do so renders some chips inoperative after a certain number
of S4 cycles.

This patch should be backported to kernels as old as 3.2,
that contain the commits 0131e23ecd42a334b2a57d250bf1f5b5684c7c4e
"xhci: Implement HS/FS/LS bandwidth checking." and
commit 2a82167efed092ad62554b5cbf6c2a3540c65b19
"xhci: Implement HS/FS/LS bandwidth checking."

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable@vger.kernel.org