soundwire: intel_ace2x: set SYNCPRD before powering-up

The registers used for multi-link synchronization are no longer in the
SHIM but in the HDaudio multi-link capability space. Use helpers to
configure the SYNCPRD value, and wait for SYNCPU to change after
powering-up.

Note that the SYNCPRD value is shared between all sublinks, for
obvious reasons if those links are supposed to be synchronized. The
value of SYNCPRD is programmed only once for all sublinks.

Signed-off-by: Pierre-Louis Bossart <[email protected]>
Reviewed-by: Rander Wang <[email protected]>
Reviewed-by: Péter Ujfalusi <[email protected]>
Reviewed-by: Ranjani Sridharan <[email protected]>
Signed-off-by: Bard Liao <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

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