xhci: Use completion and status in global command queue

Remove the per-device command list and handle_cmd_in_cmd_wait_list()
and use the completion and status variables found in the
command structure in the global command list.

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --cc drivers/usb/host/xhci-hub.c
Simple merge

diff --cc drivers/usb/host/xhci-mem.c
Simple merge

diff --cc drivers/usb/host/xhci-ring.c
Simple merge

diff --cc drivers/usb/host/xhci.c
Simple merge

diff --cc drivers/usb/host/xhci.h
Simple merge