ACPI: property: Dig "rotation" property for devices with CSI2 _CRS

Find the "rotation" property value for devices with _CRS CSI-2 resource
descriptors and use it to add the "rotation" property to the software
nodes representing the CSI-2 connection graph.  That value typically
comes from the _PLD (Physical Location of Device) object if it is
present for the given device.

This way, camera sensor drivers that know the "rotation" property do not
need to care about _PLD on systems using ACPI.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
[ rjw: Changelog edits, file rename ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Sakari Ailus <sakari.ailus@linux.intel.com>