FROMGIT: usb: assign ACPI companions for embedded USB devices

USB devices permanently connected to USB ports may be described in ACPI
tables and share ACPI devices with ports they are connected to. See [1]
for details.

This will allow us to describe sideband resources for devices, such as,
for example, hard reset line for BT USB controllers.

[1] https://docs.microsoft.com/en-us/windows-hardware/drivers/bringup/other-acpi-namespace-objects#acpi-namespace-hierarchy-and-adr-for-embedded-usb-devices



Signed-off-by: Dmitry Torokhov <dtor@chromium.org>
Signed-off-by: Rajat Jain <rajatja@google.com> (changed how we get the usb_port)
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tested-by: Sukumar Ghorai <sukumar.ghorai@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
(cherry picked from commit b4dfbbd1
 git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git master)

BUG=b:80089559
TEST=Test by simulating BT timeouts by instrumenting the kernel

Change-Id: Ie09349bca0472951f10dab17baf4db8eb2ed02bb
Reviewed-on: https://chromium-review.googlesource.com/1435750


Commit-Ready: Rajat Jain <rajatja@chromium.org>
Tested-by: Rajat Jain <rajatja@chromium.org>
Reviewed-by: Dmitry Torokhov <dtor@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@chromium.org>