msm: kgsl: fix build when dma-buf, ashmem and fbdev are not enabled

All of these features can be disabled in the kernel config.
Add appropriate idefs so that the build isn't broken in
this case.

Change-Id: Ife3283c40a87012ab58a679a911090a00e627a61
Signed-off-by: Jeremy Gebben <jgebben@codeaurora.org>