drm/xe/oa: Add syncs support to OA config ioctl

drm/xe/oa: Add syncs support to OA config ioctl

[ Upstream commit 9920c8b88c5cf2e44f4ff508dd3c0c96e4364db0 ]

In addition to stream open, add xe_sync support to the OA config ioctl,
where it is even more useful. This allows e.g. Mesa to replay a workload
repeatedly on the GPU, each time with a different OA configuration, while
precisely controlling (at batch buffer granularity) the workload segment
for which a particular OA configuration is active, without introducing
stalls in the userspace pipeline.

v2: Emit OA config even when config id is same as previous, to ensure
    consistent sync behavior (Jose)

Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241022200352.1192560-7-ashutosh.dixit@intel.com
Stable-dep-of: 5bd566703e16 ("drm/xe/oa: Allow oa_exponent value of 0")
Signed-off-by: Sasha Levin <sashal@kernel.org>