Update to v6.11 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-6.11

Test: Builds and bionic unit tests pass on raven.
Test: Able to log in to an Android GO 32 bit device.
Change-Id: Ie3dc109cb5730a5e3d0ba2fe58ed9b69ea8857c6
diff --git a/libc/kernel/uapi/linux/tcp_metrics.h b/libc/kernel/uapi/linux/tcp_metrics.h
index 931f50c..46ca141 100644
--- a/libc/kernel/uapi/linux/tcp_metrics.h
+++ b/libc/kernel/uapi/linux/tcp_metrics.h
@@ -4,8 +4,8 @@
  * See https://android.googlesource.com/platform/bionic/+/master/libc/kernel/
  * for more information.
  */
-#ifndef _LINUX_TCP_METRICS_H
-#define _LINUX_TCP_METRICS_H
+#ifndef _UAPI_LINUX_TCP_METRICS_H
+#define _UAPI_LINUX_TCP_METRICS_H
 #include <linux/types.h>
 #define TCP_METRICS_GENL_NAME "tcp_metrics"
 #define TCP_METRICS_GENL_VERSION 0x1
@@ -21,6 +21,17 @@
 };
 #define TCP_METRIC_MAX (__TCP_METRIC_MAX - 1)
 enum {
+  TCP_METRICS_A_METRICS_RTT = 1,
+  TCP_METRICS_A_METRICS_RTTVAR,
+  TCP_METRICS_A_METRICS_SSTHRESH,
+  TCP_METRICS_A_METRICS_CWND,
+  TCP_METRICS_A_METRICS_REODERING,
+  TCP_METRICS_A_METRICS_RTT_US,
+  TCP_METRICS_A_METRICS_RTTVAR_US,
+  __TCP_METRICS_A_METRICS_MAX
+};
+#define TCP_METRICS_A_METRICS_MAX (__TCP_METRICS_A_METRICS_MAX - 1)
+enum {
   TCP_METRICS_ATTR_UNSPEC,
   TCP_METRICS_ATTR_ADDR_IPV4,
   TCP_METRICS_ATTR_ADDR_IPV6,