Revert "Updating optimal settings of TFA9878 device to V12"

This reverts commit 0d1aa29f.
Change has been propagated from wrong branch. Fix the issue by
reverting the changes.

Change-Id: Ia0a9335b9492d65a67f6cd7b6a07784625bcfe89
Signed-off-by: Dhanalakshmi Siddani <dsiddani@codeaurora.org>