This adds VIN[0-2] clock support to R8A7791 SoC.

Changes in V2:
* none.

Changes in V3:
* capitalized ARM in the subject.
Signed-off-by: Valentine Barshak <valentine.barshak@cogentembedded.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>