[Feature][T106][task-view-1450]add emmc io test in lynq-at-factory

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

Change-Id: I6028fc66a583c9baaad2500e566de3b6f1b5ced2
1 file changed