dt-bindings: reset: a10sr: Add Arria10 SR Reset Controller offsets

The Arria10 System Resource Chip reset controller handles the
Arria10 peripheral PHYs. This patch adds the offsets for
these PHYs.

Signed-off-by: Thor Thayer <thor.thayer@linux.intel.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>