power: smb347-charger: reset chip during init

Reset the charger chip during init.  It's going to reset it self during
normal operation every time the primary input is unplugged, so we might
as well reset it manually so it's always in a consistent state after
boot and after unplugging.

Change-Id: Ia50024ebb8fcd50eeef565ccea994076b3f04546
Signed-off-by: Colin Cross <ccross@android.com>