Update to kernel headers v5.3.2.

Test: Builds and run unit tests on taimen/cuttlefish.
Change-Id: I6ebd8f179d159ac974555e8edca588083e8081b3
diff --git a/libc/kernel/uapi/linux/sched.h b/libc/kernel/uapi/linux/sched.h
index 0460083..b396348 100644
--- a/libc/kernel/uapi/linux/sched.h
+++ b/libc/kernel/uapi/linux/sched.h
@@ -18,6 +18,7 @@
  ****************************************************************************/
 #ifndef _UAPI_LINUX_SCHED_H
 #define _UAPI_LINUX_SCHED_H
+#include <linux/types.h>
 #define CSIGNAL 0x000000ff
 #define CLONE_VM 0x00000100
 #define CLONE_FS 0x00000200
@@ -43,6 +44,16 @@
 #define CLONE_NEWPID 0x20000000
 #define CLONE_NEWNET 0x40000000
 #define CLONE_IO 0x80000000
+struct clone_args {
+  __aligned_u64 flags;
+  __aligned_u64 pidfd;
+  __aligned_u64 child_tid;
+  __aligned_u64 parent_tid;
+  __aligned_u64 exit_signal;
+  __aligned_u64 stack;
+  __aligned_u64 stack_size;
+  __aligned_u64 tls;
+};
 #define SCHED_NORMAL 0
 #define SCHED_FIFO 1
 #define SCHED_RR 2
@@ -53,5 +64,11 @@
 #define SCHED_FLAG_RESET_ON_FORK 0x01
 #define SCHED_FLAG_RECLAIM 0x02
 #define SCHED_FLAG_DL_OVERRUN 0x04
-#define SCHED_FLAG_ALL (SCHED_FLAG_RESET_ON_FORK | SCHED_FLAG_RECLAIM | SCHED_FLAG_DL_OVERRUN)
+#define SCHED_FLAG_KEEP_POLICY 0x08
+#define SCHED_FLAG_KEEP_PARAMS 0x10
+#define SCHED_FLAG_UTIL_CLAMP_MIN 0x20
+#define SCHED_FLAG_UTIL_CLAMP_MAX 0x40
+#define SCHED_FLAG_KEEP_ALL (SCHED_FLAG_KEEP_POLICY | SCHED_FLAG_KEEP_PARAMS)
+#define SCHED_FLAG_UTIL_CLAMP (SCHED_FLAG_UTIL_CLAMP_MIN | SCHED_FLAG_UTIL_CLAMP_MAX)
+#define SCHED_FLAG_ALL (SCHED_FLAG_RESET_ON_FORK | SCHED_FLAG_RECLAIM | SCHED_FLAG_DL_OVERRUN | SCHED_FLAG_KEEP_ALL | SCHED_FLAG_UTIL_CLAMP)
 #endif