Support Deps / libvpx / 93a8a1eb8c8

Commits

Adrian Grange committed 93a8a1eb8c805 May 2014

Fix generic-gnu target build

Added macro to conditionally compile some of the
post-processing functions only when CONFIG_POSTPROC
is defined.

This was causing the build for the generic-gnu target
to fail.

Change-Id: Ibfa447feceb7a0528135025f105be48f97e9965c