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/openvswitch.h b/libc/kernel/uapi/linux/openvswitch.h
index 05d750a..5dba4e6 100644
--- a/libc/kernel/uapi/linux/openvswitch.h
+++ b/libc/kernel/uapi/linux/openvswitch.h
@@ -446,6 +446,7 @@
   OVS_ACTION_ATTR_CLONE,
   OVS_ACTION_ATTR_CHECK_PKT_LEN,
   OVS_ACTION_ATTR_ADD_MPLS,
+  OVS_ACTION_ATTR_DEC_TTL,
   __OVS_ACTION_ATTR_MAX,
 };
 #define OVS_ACTION_ATTR_MAX (__OVS_ACTION_ATTR_MAX - 1)
@@ -509,4 +510,9 @@
   __u32 limit;
   __u32 count;
 };
+enum ovs_dec_ttl_attr {
+  OVS_DEC_TTL_ATTR_UNSPEC,
+  OVS_DEC_TTL_ATTR_ACTION,
+  __OVS_DEC_TTL_ATTR_MAX
+};
 #endif