add dmabuf and remove ion configure.

Below patch only changes gki platform config, here align the change
for non gki platform.
eee95206 MA-19204-9 [Android] enable dmabuf heap defconfig

Change-Id: I7bfda85d25e8b2b4f15d7e8209484ae63826743f
Signed-off-by: Jessie Hao <juan.hao@nxp.com>