usb: host: xhci-sideband: delegate offload_usage tracking to class drivers

usb: host: xhci-sideband: delegate offload_usage tracking to class drivers

Remove usb_offload_get() and usb_offload_put() from the xHCI sideband
interrupter creation and removal paths.

The responsibility of manipulating offload_usage now lies entirely with
the USB class drivers. They have the precise context of when an offload
data stream actually starts and stops, ensuring a much more accurate
representation of offload activity for power management.

Cc: stable <stable@kernel.org>
Fixes: ef82a4803aab ("xhci: sideband: add api to trace sideband usage")
Signed-off-by: Guan-Yu Lin <guanyulin@google.com>
Tested-by: Hailong Liu <hailong.liu@oppo.com>
Tested-by: hailong.liu@oppo.com
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260401123238.3790062-3-guanyulin@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>