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/asm-x86/asm/debugreg.h b/libc/kernel/uapi/asm-x86/asm/debugreg.h
index aeb8b02..360f432 100644
--- a/libc/kernel/uapi/asm-x86/asm/debugreg.h
+++ b/libc/kernel/uapi/asm-x86/asm/debugreg.h
@@ -28,6 +28,7 @@
 #define DR_TRAP2 (0x4)
 #define DR_TRAP3 (0x8)
 #define DR_TRAP_BITS (DR_TRAP0 | DR_TRAP1 | DR_TRAP2 | DR_TRAP3)
+#define DR_BUS_LOCK (0x800)
 #define DR_STEP (0x4000)
 #define DR_SWITCH (0x8000)
 #define DR_CONTROL_SHIFT 16