Update to v5.7 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-5.7

Update the generate_uapi_headers.sh where the types.h file is now in
the right place, but kvm.h is not.

Test: Booted cuttlefish/bonito.
Test: Ran bionic-unit-tests on cuttlefish/bonito.
Change-Id: Ice9ce370a658e320b80f564b34a4431927fcf100
diff --git a/libc/kernel/uapi/linux/rpl_iptunnel.h b/libc/kernel/uapi/linux/rpl_iptunnel.h
new file mode 100644
index 0000000..c61725d
--- /dev/null
+++ b/libc/kernel/uapi/linux/rpl_iptunnel.h
@@ -0,0 +1,28 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _UAPI_LINUX_RPL_IPTUNNEL_H
+#define _UAPI_LINUX_RPL_IPTUNNEL_H
+enum {
+  RPL_IPTUNNEL_UNSPEC,
+  RPL_IPTUNNEL_SRH,
+  __RPL_IPTUNNEL_MAX,
+};
+#define RPL_IPTUNNEL_MAX (__RPL_IPTUNNEL_MAX - 1)
+#define RPL_IPTUNNEL_SRH_SIZE(srh) (((srh)->hdrlen + 1) << 3)
+#endif