intel: wrap intel_bufmgr.h C code for C++ compilation/linking

We need this include in porting changes for the OpenGL ES
conformance suite.

v2: remove c_plusplus usage

Signed-off-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
1 file changed