Update to v5.13 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-5.13

Test: Builds, bionic unit tests.
Change-Id: Ia4360ca4a2808206f64187dcb234d73c5752624b
diff --git a/libc/kernel/uapi/linux/tty_flags.h b/libc/kernel/uapi/linux/tty_flags.h
index fe591e5..b8354cf 100644
--- a/libc/kernel/uapi/linux/tty_flags.h
+++ b/libc/kernel/uapi/linux/tty_flags.h
@@ -36,7 +36,6 @@
 #define ASYNCB_AUTOPROBE 15
 #define ASYNCB_MAGIC_MULTIPLIER 16
 #define ASYNCB_LAST_USER 16
-#ifndef _KERNEL_
 #define ASYNCB_INITIALIZED 31
 #define ASYNCB_SUSPENDED 30
 #define ASYNCB_NORMAL_ACTIVE 29
@@ -47,7 +46,6 @@
 #define ASYNCB_SHARE_IRQ 24
 #define ASYNCB_CONS_FLOW 23
 #define ASYNCB_FIRST_KERNEL 22
-#endif
 #define ASYNC_HUP_NOTIFY (1U << ASYNCB_HUP_NOTIFY)
 #define ASYNC_SUSPENDED (1U << ASYNCB_SUSPENDED)
 #define ASYNC_FOURPORT (1U << ASYNCB_FOURPORT)
@@ -67,12 +65,11 @@
 #define ASYNC_AUTOPROBE (1U << ASYNCB_AUTOPROBE)
 #define ASYNC_MAGIC_MULTIPLIER (1U << ASYNCB_MAGIC_MULTIPLIER)
 #define ASYNC_FLAGS ((1U << (ASYNCB_LAST_USER + 1)) - 1)
-#define ASYNC_DEPRECATED (ASYNC_SESSION_LOCKOUT | ASYNC_PGRP_LOCKOUT | ASYNC_CALLOUT_NOHUP | ASYNC_AUTOPROBE)
+#define ASYNC_DEPRECATED (ASYNC_SPLIT_TERMIOS | ASYNC_SESSION_LOCKOUT | ASYNC_PGRP_LOCKOUT | ASYNC_CALLOUT_NOHUP | ASYNC_AUTOPROBE)
 #define ASYNC_USR_MASK (ASYNC_SPD_MASK | ASYNC_CALLOUT_NOHUP | ASYNC_LOW_LATENCY)
 #define ASYNC_SPD_CUST (ASYNC_SPD_HI | ASYNC_SPD_VHI)
 #define ASYNC_SPD_WARP (ASYNC_SPD_HI | ASYNC_SPD_SHI)
 #define ASYNC_SPD_MASK (ASYNC_SPD_HI | ASYNC_SPD_VHI | ASYNC_SPD_SHI)
-#ifndef _KERNEL_
 #define ASYNC_INITIALIZED (1U << ASYNCB_INITIALIZED)
 #define ASYNC_NORMAL_ACTIVE (1U << ASYNCB_NORMAL_ACTIVE)
 #define ASYNC_BOOT_AUTOCONF (1U << ASYNCB_BOOT_AUTOCONF)
@@ -83,4 +80,3 @@
 #define ASYNC_CONS_FLOW (1U << ASYNCB_CONS_FLOW)
 #define ASYNC_INTERNAL_FLAGS (~((1U << ASYNCB_FIRST_KERNEL) - 1))
 #endif
-#endif