msm: acpuclock-8930: Use level values for the max vdd of vdd_dig regulator

The voltage of vdd_dig is specified using the corner level values. Fix
the use of the max vdd to be the level values instead of the concrete
voltage number.

Change-Id: I10fa63c70af1d6510f9378ec7529ad00930e4cfa
Signed-off-by: Tianyi Gou <tgou@codeaurora.org>
3 files changed