nvram: change ccode to EU (thanks to tramp20)

for more information: http://goo.gl/C4Ri3U

Change-Id: Ia9fd002ebb0497459c85cd1cca1f309e54392257
add NEEDS_VECTORIMPL_SYMBOLS flag, some more audio cleanups

Change-Id: I1f88cbd1be934f5a57ff622ad0479b5c34fcb3e3