ARM: dts: msm: Disable float-voltage adjust algorithm for PMI8994

The float-voltage adjust logic in some cases is found to over-correct the
VDD_MAX value, which may prevent the FG from reporting a FULL soc at
end-of-charge.
Disable the logic for float-adjustments as it has not been found to be
useful and the VDD_MAX meets the required spec on trimmed parts.

CRs-Fixed: 1093470
Change-Id: I518c68ff88784d8d8b4a63e8a91cc882340cf09c
Signed-off-by: ansharma <ansharma@codeaurora.org>