Update to v4.17.3 kernel headers.

Test: Builds, boots on a walleye.
Change-Id: I389d8b61ec00ea309e38d1b1a2e0dace48c21edb
diff --git a/libc/kernel/uapi/drm/etnaviv_drm.h b/libc/kernel/uapi/drm/etnaviv_drm.h
index 58bd536..bb502d9 100644
--- a/libc/kernel/uapi/drm/etnaviv_drm.h
+++ b/libc/kernel/uapi/drm/etnaviv_drm.h
@@ -34,6 +34,12 @@
 #define ETNAVIV_PARAM_GPU_FEATURES_4 0x07
 #define ETNAVIV_PARAM_GPU_FEATURES_5 0x08
 #define ETNAVIV_PARAM_GPU_FEATURES_6 0x09
+#define ETNAVIV_PARAM_GPU_FEATURES_7 0x0a
+#define ETNAVIV_PARAM_GPU_FEATURES_8 0x0b
+#define ETNAVIV_PARAM_GPU_FEATURES_9 0x0c
+#define ETNAVIV_PARAM_GPU_FEATURES_10 0x0d
+#define ETNAVIV_PARAM_GPU_FEATURES_11 0x0e
+#define ETNAVIV_PARAM_GPU_FEATURES_12 0x0f
 #define ETNAVIV_PARAM_GPU_STREAM_COUNT 0x10
 #define ETNAVIV_PARAM_GPU_REGISTER_MAX 0x11
 #define ETNAVIV_PARAM_GPU_THREAD_COUNT 0x12