drm/msm: make msm_drm.h uapi header safe for C++

fixes the C++ related compilation issues.

CRs-Fixed: 2038080
Change-Id: If6b4f379eb27f3de6153b8666f733c0b8245851f
Signed-off-by: Manoj Kumar AVM <manojavm@codeaurora.org>
1 file changed