Revert "xhci: turn off port power in shutdown"

Revert "xhci: turn off port power in shutdown"

This reverts commit 3f1e8ed6702d264516fff8146151800107ce8741.

Turning off port power in shutdown did cause issues such as a laptop not
proprly powering off, and some specific usb devies failing to enumerate the
subsequent boot after a warm reset.

So revert this.

Fixes: 3f1e8ed6702d ("xhci: turn off port power in shutdown")
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20220825150840.132216-4-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>