Update to v6.4 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-6.4

Test: Bionic unit tests pass.
Change-Id: I991f8eaa2b272a464166addb13e6bdc63734444d
diff --git a/libc/kernel/uapi/sound/sof/abi.h b/libc/kernel/uapi/sound/sof/abi.h
index dc4e525..a4844d6 100644
--- a/libc/kernel/uapi/sound/sof/abi.h
+++ b/libc/kernel/uapi/sound/sof/abi.h
@@ -35,4 +35,5 @@
 #define SOF_ABI_VERSION_INCOMPATIBLE(sof_ver,client_ver) (SOF_ABI_VERSION_MAJOR((sof_ver)) != SOF_ABI_VERSION_MAJOR((client_ver)))
 #define SOF_ABI_VERSION SOF_ABI_VER(SOF_ABI_MAJOR, SOF_ABI_MINOR, SOF_ABI_PATCH)
 #define SOF_ABI_MAGIC 0x00464F53
+#define SOF_IPC4_ABI_MAGIC 0x34464F53
 #endif