power: qpnp-qg: Update a specific SOC scaling condition

Allow the SOC to scale to a higher value in a specific
condition (msoc = 0), even if USB is present and we are
discharging. This typically occurs during boot-up with
charger connected at 0% SOC.

Change-Id: If7dd806e6427b65427d5999bb9ccda7098ec6107
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>