dt-bindings: qpnp-fg-gen4: Update delta MSOC/BSOC threshold configuration

Currently, delta MSOC/BSOC threshold can be configured from 1 to
12 %. However, it can be configured in 0.5 % increments. This is
useful when SOC (State of Charge) required to be monitored more
accurately. Allow this configuration by changing the parameter to
be specified in deci-percentage unit (e.g. 10 is 1 %).

Change-Id: I021f7612293b028633721f5e7a995e3c5a1401c4
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>