Update to v4.17.3 kernel headers.

Test: Builds, boots on a walleye.
Change-Id: I389d8b61ec00ea309e38d1b1a2e0dace48c21edb
diff --git a/libc/kernel/uapi/linux/dvb/version.h b/libc/kernel/uapi/linux/dvb/version.h
index 35cbfb1..47c8c74 100644
--- a/libc/kernel/uapi/linux/dvb/version.h
+++ b/libc/kernel/uapi/linux/dvb/version.h
@@ -19,5 +19,5 @@
 #ifndef _DVBVERSION_H_
 #define _DVBVERSION_H_
 #define DVB_API_VERSION 5
-#define DVB_API_VERSION_MINOR 10
+#define DVB_API_VERSION_MINOR 11
 #endif