google_battery: reveal time_to_full_now in acceptable range

Correct the logic of max_ratio to show TTF condition:
- over TTF_REPORT_MAX_RATIO: not showing for better user experience
- >= 0 and under TTF_REPORT_MAX_RATIO: acceptable, showing TTF
- < 0 means google_ttf not ready, get data from fg

Bug: 219663652
Signed-off-by: Jenny Ho <hsiufangho@google.com>
Change-Id: I42f22ad8fa748be2cc9e1d1a3fd46affa619bdd8
(cherry picked from commit 218914727c62d27e4c8936cae68c04ad568c7073)
1 file changed