Update to v5.5 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-5.5

Test: Boots on walleye.
Test: Ran bionic-unit-tests on walleye.
Test: Boots on cuttlefish.
Test: Ran bionic-unit-tests on cuttlefish.
Change-Id: I57387d3c31e0ba5ad125ffe291cecf365c7b374e
diff --git a/libc/kernel/uapi/linux/msg.h b/libc/kernel/uapi/linux/msg.h
index 20d8d4f..bb32b93 100644
--- a/libc/kernel/uapi/linux/msg.h
+++ b/libc/kernel/uapi/linux/msg.h
@@ -29,9 +29,9 @@
   struct __kernel_legacy_ipc_perm msg_perm;
   struct msg * msg_first;
   struct msg * msg_last;
-  __kernel_time_t msg_stime;
-  __kernel_time_t msg_rtime;
-  __kernel_time_t msg_ctime;
+  __kernel_old_time_t msg_stime;
+  __kernel_old_time_t msg_rtime;
+  __kernel_old_time_t msg_ctime;
   unsigned long msg_lcbytes;
   unsigned long msg_lqbytes;
   unsigned short msg_cbytes;