Update kernel headers with new parser.

Test: Builds.
Change-Id: I3f0714d53ac893ccc3e66f7a92d0ea7a6737f1c3
diff --git a/libc/kernel/uapi/drm/i810_drm.h b/libc/kernel/uapi/drm/i810_drm.h
index 1fd3c46..e33387d 100644
--- a/libc/kernel/uapi/drm/i810_drm.h
+++ b/libc/kernel/uapi/drm/i810_drm.h
@@ -20,6 +20,7 @@
 #define _I810_DRM_H_
 #include "drm.h"
 #ifdef __cplusplus
+extern "C" {
 #endif
 #ifndef _I810_DEFINES_
 #define _I810_DEFINES_
@@ -214,5 +215,6 @@
   unsigned int last_render;
 } drm_i810_mc_t;
 #ifdef __cplusplus
+}
 #endif
 #endif