ac/rgp: Initialize clock_calibration.reserved.
Fix defect reported by Coverity Scan.
Uninitialized scalar variable (UNINIT) uninit_use_in_call: Using uninitialized value clock_calibration. Field clock_calibration.reserved is uninitialized when calling fwrite.
Fixes: 1ee85e8b ("ac/rgp: add support for clock calibration") Signed-off-by: Vinson Lee vlee@freedesktop.org