power: qpnp-smbcharger: enable parallel charger immediately

When an event happens which could change parallel charger
current distribution, the current driver won't act on it immediately.
It waits for a timed delay before reconfiguring.

If parallel charger is already in progress, don't delay for
reconfiguration. Act on it immediately.

Change-Id: I2685b1d19e0c5985a9bb1e0ce411e03e9f26154d
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>