fix use of libdrm_omap
fix use of libdrm_omap

We never defined HAS_LIBDRM_OMAP, so the support was not fully compiled
in.

Signed-off-by: Tomi Valkeinen <e1ca4dbb8be1acaf20734fecd2da10ed1d46a9bb@ideasonboard.com>

tomba/kmsxx,tomba/kmsxx,tomba/kmsxx,tomba/kmsxx