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/igmp.h b/libc/kernel/uapi/linux/igmp.h
index 885b0f8..71c2c8d 100644
--- a/libc/kernel/uapi/linux/igmp.h
+++ b/libc/kernel/uapi/linux/igmp.h
@@ -37,7 +37,7 @@
   __u8 grec_auxwords;
   __be16 grec_nsrcs;
   __be32 grec_mca;
-  __be32 grec_src[0];
+  __be32 grec_src[];
 };
 struct igmpv3_report {
   __u8 type;
@@ -45,7 +45,7 @@
   __sum16 csum;
   __be16 resv2;
   __be16 ngrec;
-  struct igmpv3_grec grec[0];
+  struct igmpv3_grec grec[];
 };
 struct igmpv3_query {
   __u8 type;
@@ -61,7 +61,7 @@
 #endif
   __u8 qqic;
   __be16 nsrcs;
-  __be32 srcs[0];
+  __be32 srcs[];
 };
 #define IGMP_HOST_MEMBERSHIP_QUERY 0x11
 #define IGMP_HOST_MEMBERSHIP_REPORT 0x12