[Feature][T8TSK-242]backup for old fota/delta

Only Configure: No
Affected branch: GSW3.0-Temp-PU
Affected module: fota
Is it addected on both ZXIC and MTK: only MTK
Self-test: Yes
Doc Update: No

Change-Id: Ia61d72ae4f504b375c8def30400a1208dd8c040e
1 file changed