Update to v6.0 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-6.0

Test: Boots on coral.
Test: Bionic unit tests pass.
Change-Id: I282de83f23b432bef58214108a93700bdadddf0f
diff --git a/libc/kernel/uapi/sound/usb_stream.h b/libc/kernel/uapi/sound/usb_stream.h
index bb7fe80..ac87c31 100644
--- a/libc/kernel/uapi/sound/usb_stream.h
+++ b/libc/kernel/uapi/sound/usb_stream.h
@@ -49,7 +49,7 @@
   unsigned inpacket_split_at;
   unsigned next_inpacket_split;
   unsigned next_inpacket_split_at;
-  struct usb_stream_packet inpacket[0];
+  struct usb_stream_packet inpacket[];
 };
 enum usb_stream_state {
   usb_stream_invalid,