Allow mediaserver to access cpu governer on shamu

When playing protected content, shamu was stuttering
severely.  Qualcomm provided a fix that votes for a
higher CPU frequency during protect content playback,
which introduces the need to access the cpu governer.

bug: 27502383
Change-Id: If2813973f9dc904469e6f60e24ede2f82047eabe
1 file changed