hammerhead: update proprietary-blobs.txt

 - apks are now stored in individual directories
   eg: foo.apk -> foo/foo.apk

Change-Id: I0901ac48a84efa851e90caabad38629fd6950d0b
Update props
hammerhead: Add missing drm blobs

Change-Id: I44bc299fd9bc71b0ef61551861f02efdc355d0f8