[video] : added mime-type for mov files

- Added video/quicktime mime type for mov files in
  MediaFiles.Depend on the mime-type it decides
  to show either in gallery or music app

CRs-fixed: 515036

Change-Id: Ieab6c15d78d2d140158833905e8e387643f1157a
Merge "[video] : added mime-type for mov files" into du44