hammerhead: Add media codec capabilities

 * Upstream change.

Change-Id: Iee2057acdbaea851d67300a468785c661f879c90
Cleanup Obsolete LOCAL_PRELINK_MODULE.

Bug: 18675947
Change-Id: Ic00a367b5c108f4a7c18b3ab4d3a1da74cc97353
Suppress trivial warnings from clang compiler.

* Unused formal parameter names.
* Comparing array with null pointer.

Change-Id: I4ffc5a7a94b5bc5508b590686ce16d3ae5f579f4