Add support for CONFIG_FILTER_INTRA to the cmake build.

Note: CONFIG_FILTER_INTRA is broken in both build systems due
to link errors. This is a parity patch.

BUG=https://bugs.chromium.org/p/aomedia/issues/detail?id=76

Change-Id: I713bc7b6f5f13387bbf6b9e3df22731c22d558cc
1 file changed