[Bugfix][T106][bug-view-928]Fixed the issue of serial port printing when print_1evel=4

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

Change-Id: I1d606c6f61dd5cf96017555c411d79ee46c52091
1 file changed