Update to v3.18.18 kernel headers.

Change-Id: I0a0f423bda89500ad8e13a80582f05ec8bc756ea
diff --git a/libc/kernel/uapi/drm/radeon_drm.h b/libc/kernel/uapi/drm/radeon_drm.h
index 6fb86f1..abe3c4f 100644
--- a/libc/kernel/uapi/drm/radeon_drm.h
+++ b/libc/kernel/uapi/drm/radeon_drm.h
@@ -961,29 +961,30 @@
 #define RADEON_INFO_GTT_USAGE 0x1f
 #define RADEON_INFO_ACTIVE_CU_COUNT 0x20
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define RADEON_INFO_VA_UNMAP_WORKING 0x25
 struct drm_radeon_info {
   uint32_t request;
   uint32_t pad;
-  uint64_t value;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  uint64_t value;
 };
 #define SI_TILE_MODE_COLOR_LINEAR_ALIGNED 8
 #define SI_TILE_MODE_COLOR_1D 13
-#define SI_TILE_MODE_COLOR_1D_SCANOUT 9
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define SI_TILE_MODE_COLOR_1D_SCANOUT 9
 #define SI_TILE_MODE_COLOR_2D_8BPP 14
 #define SI_TILE_MODE_COLOR_2D_16BPP 15
 #define SI_TILE_MODE_COLOR_2D_32BPP 16
-#define SI_TILE_MODE_COLOR_2D_64BPP 17
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define SI_TILE_MODE_COLOR_2D_64BPP 17
 #define SI_TILE_MODE_COLOR_2D_SCANOUT_16BPP 11
 #define SI_TILE_MODE_COLOR_2D_SCANOUT_32BPP 12
 #define SI_TILE_MODE_DEPTH_STENCIL_1D 4
-#define SI_TILE_MODE_DEPTH_STENCIL_2D 0
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define SI_TILE_MODE_DEPTH_STENCIL_2D 0
 #define SI_TILE_MODE_DEPTH_STENCIL_2D_2AA 3
 #define SI_TILE_MODE_DEPTH_STENCIL_2D_4AA 3
 #define SI_TILE_MODE_DEPTH_STENCIL_2D_8AA 2
-#define CIK_TILE_MODE_DEPTH_STENCIL_1D 5
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define CIK_TILE_MODE_DEPTH_STENCIL_1D 5
 #endif
diff --git a/libc/kernel/uapi/linux/version.h b/libc/kernel/uapi/linux/version.h
index a6c6a2f..c927720 100644
--- a/libc/kernel/uapi/linux/version.h
+++ b/libc/kernel/uapi/linux/version.h
@@ -16,5 +16,5 @@
  ***
  ****************************************************************************
  ****************************************************************************/
-#define LINUX_VERSION_CODE 201226
+#define LINUX_VERSION_CODE 201234
 #define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))