Update to v6.1 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-6.1

Test: Bionic unit tests pass.
Change-Id: I9414fb5e698a9806b85eb09e37d763849f08a468
diff --git a/libc/kernel/uapi/linux/lwtunnel.h b/libc/kernel/uapi/linux/lwtunnel.h
index e6fb536..94011dd 100644
--- a/libc/kernel/uapi/linux/lwtunnel.h
+++ b/libc/kernel/uapi/linux/lwtunnel.h
@@ -30,6 +30,7 @@
   LWTUNNEL_ENCAP_SEG6_LOCAL,
   LWTUNNEL_ENCAP_RPL,
   LWTUNNEL_ENCAP_IOAM6,
+  LWTUNNEL_ENCAP_XFRM,
   __LWTUNNEL_ENCAP_MAX,
 };
 #define LWTUNNEL_ENCAP_MAX (__LWTUNNEL_ENCAP_MAX - 1)
@@ -107,4 +108,11 @@
 };
 #define LWT_BPF_MAX (__LWT_BPF_MAX - 1)
 #define LWT_BPF_MAX_HEADROOM 256
+enum {
+  LWT_XFRM_UNSPEC,
+  LWT_XFRM_IF_ID,
+  LWT_XFRM_LINK,
+  __LWT_XFRM_MAX,
+};
+#define LWT_XFRM_MAX (__LWT_XFRM_MAX - 1)
 #endif