Update to kernel headers v5.2.

Test: Booted a taimen, ran unit bionic unit tests.
Change-Id: I3522c59793bbcef98ea515996a481d92f14b8816
diff --git a/libc/kernel/uapi/linux/mount.h b/libc/kernel/uapi/linux/mount.h
index 54a4719..10c53a5 100644
--- a/libc/kernel/uapi/linux/mount.h
+++ b/libc/kernel/uapi/linux/mount.h
@@ -52,4 +52,38 @@
 #define MS_RMT_MASK (MS_RDONLY | MS_SYNCHRONOUS | MS_MANDLOCK | MS_I_VERSION | MS_LAZYTIME)
 #define MS_MGC_VAL 0xC0ED0000
 #define MS_MGC_MSK 0xffff0000
+#define OPEN_TREE_CLONE 1
+#define OPEN_TREE_CLOEXEC O_CLOEXEC
+#define MOVE_MOUNT_F_SYMLINKS 0x00000001
+#define MOVE_MOUNT_F_AUTOMOUNTS 0x00000002
+#define MOVE_MOUNT_F_EMPTY_PATH 0x00000004
+#define MOVE_MOUNT_T_SYMLINKS 0x00000010
+#define MOVE_MOUNT_T_AUTOMOUNTS 0x00000020
+#define MOVE_MOUNT_T_EMPTY_PATH 0x00000040
+#define MOVE_MOUNT__MASK 0x00000077
+#define FSOPEN_CLOEXEC 0x00000001
+#define FSPICK_CLOEXEC 0x00000001
+#define FSPICK_SYMLINK_NOFOLLOW 0x00000002
+#define FSPICK_NO_AUTOMOUNT 0x00000004
+#define FSPICK_EMPTY_PATH 0x00000008
+enum fsconfig_command {
+  FSCONFIG_SET_FLAG = 0,
+  FSCONFIG_SET_STRING = 1,
+  FSCONFIG_SET_BINARY = 2,
+  FSCONFIG_SET_PATH = 3,
+  FSCONFIG_SET_PATH_EMPTY = 4,
+  FSCONFIG_SET_FD = 5,
+  FSCONFIG_CMD_CREATE = 6,
+  FSCONFIG_CMD_RECONFIGURE = 7,
+};
+#define FSMOUNT_CLOEXEC 0x00000001
+#define MOUNT_ATTR_RDONLY 0x00000001
+#define MOUNT_ATTR_NOSUID 0x00000002
+#define MOUNT_ATTR_NODEV 0x00000004
+#define MOUNT_ATTR_NOEXEC 0x00000008
+#define MOUNT_ATTR__ATIME 0x00000070
+#define MOUNT_ATTR_RELATIME 0x00000000
+#define MOUNT_ATTR_NOATIME 0x00000010
+#define MOUNT_ATTR_STRICTATIME 0x00000020
+#define MOUNT_ATTR_NODIRATIME 0x00000080
 #endif