Update kernel headers with new parser.

Test: Builds.
Change-Id: I3f0714d53ac893ccc3e66f7a92d0ea7a6737f1c3
diff --git a/libc/kernel/uapi/drm/omap_drm.h b/libc/kernel/uapi/drm/omap_drm.h
index 54b539a..3c2fc08 100644
--- a/libc/kernel/uapi/drm/omap_drm.h
+++ b/libc/kernel/uapi/drm/omap_drm.h
@@ -20,6 +20,7 @@
 #define __OMAP_DRM_H__
 #include "drm.h"
 #ifdef __cplusplus
+extern "C" {
 #endif
 #define OMAP_PARAM_CHIPSET_ID 1
 struct drm_omap_param {
@@ -84,5 +85,6 @@
 #define DRM_IOCTL_OMAP_GEM_CPU_FINI DRM_IOW(DRM_COMMAND_BASE + DRM_OMAP_GEM_CPU_FINI, struct drm_omap_gem_cpu_fini)
 #define DRM_IOCTL_OMAP_GEM_INFO DRM_IOWR(DRM_COMMAND_BASE + DRM_OMAP_GEM_INFO, struct drm_omap_gem_info)
 #ifdef __cplusplus
+}
 #endif
 #endif