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/linux/blkzoned.h b/libc/kernel/uapi/linux/blkzoned.h
index b551e8b..e41ac9f 100644
--- a/libc/kernel/uapi/linux/blkzoned.h
+++ b/libc/kernel/uapi/linux/blkzoned.h
@@ -54,7 +54,7 @@
   __u64 sector;
   __u32 nr_zones;
   __u32 flags;
-  struct blk_zone zones[0];
+  struct blk_zone zones[];
 };
 struct blk_zone_range {
   __u64 sector;