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/ip.h b/libc/kernel/uapi/linux/ip.h
index 9571cac..b6aef50 100644
--- a/libc/kernel/uapi/linux/ip.h
+++ b/libc/kernel/uapi/linux/ip.h
@@ -95,12 +95,12 @@
   __be16 reserved;
   __be32 spi;
   __be32 seq_no;
-  __u8 auth_data[0];
+  __u8 auth_data[];
 };
 struct ip_esp_hdr {
   __be32 spi;
   __be32 seq_no;
-  __u8 enc_data[0];
+  __u8 enc_data[];
 };
 struct ip_comp_hdr {
   __u8 nexthdr;