regulator: cprh-kbss-regulator: update open-loop fuse parameters for SDM845

Update the open-loop voltage fuse reference voltages and step
size for SDM845 in order to match the latest hardware guidelines.

Change-Id: Ic2906a0fa4fe7788d3a142b96d0e7969552223ed
Signed-off-by: David Collins <collinsd@codeaurora.org>