[Bugfix][T106BUG-182] fix the issue of no gnss time source.

Only Configure: No
Affected branch: master
Affected module: systime gnss
Is it affected on both ZXIC and MTK: only ZXIC
Self-test: Yes
Doc Update: Yes

Change-Id: Ie19972665a5028ccd00a2efa2fd68b08ba00fb21
4 files changed