Gallery2: Add mimetype of AVI,DIVX to support streaming.

 -Mimetype of avi and divx is not added in AndroidManifest.xml
  to support streaming.
 -Avi Mimetype "video/x-msvideo" and Divx mimetype "video/divx"
  needs to be added in AndroidManifest.xml.
 -Fix is to add avi and divx mimetypes in AndriodManifest.xml.

 CRs-Fixed: 517049

Change-Id: Ibda05a258096d6730163ea0d73897d985aad99dc