accel/ivpu: Add debugfs files for testing device reset

Add new debugfs files to validate device recovery functionality.

Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Reviewed-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230524074847.866711-4-stanislaw.gruszka@linux.intel.com