power: pm8921-charger: fix state of charge reporting

When the battery is missing the BMS is currently still used to
calculate the state of charge.

Fix this by reporting the voltage based state of charge when the
battery is missing.

Change-Id: I8eb265193b5bfb953add8731e9f47723cf301891
Signed-off-by: David Keitel <dkeitel@codeaurora.org>
1 file changed