lakitu_defconfig: Enable CONFIG_UDMABUF and CONFIG_DMABUF_HEAPS

BUG=b/544799390
TEST=presubmit
RELEASE_NOTE=Enabled CONFIG_UDMABUF on x86_64.

cos-patch: bug
Change-Id: Icf871a0db092571aef54a6d5eca00ff5822c1b3e
Signed-off-by: Robert Velasquez <rdvelasquez@google.com>
Reviewed-on: https://cos-review.googlesource.com/c/third_party/kernel/+/183046
Reviewed-by: Kevin Berry <kpberry@google.com>
Main-Branch-Verified: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-on: https://cos-review.googlesource.com/c/third_party/kernel/+/184626