[Feature][ZXW-204][ZXW-205] add query fota upgrade process api and backup Status

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

Change-Id: I2546527d92a356a85d60d1cd763b9b462c458e3c
5 files changed