Update to v5.19 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-5.19

Test: Builds on coral.
Test: All bionic unit tests pass on a coral device.
Test: Able to log in to wembley system.
Change-Id: I6fa6f6edb59f2cef990a7ba96877d9f2d3974c62
diff --git a/libc/kernel/uapi/linux/icmp.h b/libc/kernel/uapi/linux/icmp.h
index 8847a48..77cb328 100644
--- a/libc/kernel/uapi/linux/icmp.h
+++ b/libc/kernel/uapi/linux/icmp.h
@@ -84,7 +84,11 @@
     } echo;
     __be32 gateway;
     struct {
+#ifdef __BIONIC__
       __be16 __linux_unused;
+#else
+      __be16 __linux_unused;
+#endif
       __be16 mtu;
     } frag;
     __u8 reserved[4];