Revert "xhci: turn off port power in shutdown"

This reverts commit 0fa88d1bde1fcee48cdc16da55c4242976d05377.

This commit is causing Fizz devices to fail to enumerate USB after a
reboot.

BUG=b:241721215
TEST=Try labstation kernel with revert, see USB survive reboot

Signed-off-by: Evan Green <evgreen@chromium.org>
Change-Id: Iab364451e5b29fe31687bcbd6493648b2b4ebfc1
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/3831769
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Commit-Queue: Martin Faltesek <mfaltesek@google.com>
Tested-by: Martin Faltesek <mfaltesek@google.com>
3 files changed