Update to v5.16 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-5.16

Test: Builds and bionic unit tests pass.
Change-Id: I2522c4f2a0efb9f8a193e1f2d65868e478217502
diff --git a/libc/kernel/uapi/rdma/rdma_user_rxe.h b/libc/kernel/uapi/rdma/rdma_user_rxe.h
index 098bf6c..cdb00c7 100644
--- a/libc/kernel/uapi/rdma/rdma_user_rxe.h
+++ b/libc/kernel/uapi/rdma/rdma_user_rxe.h
@@ -76,6 +76,10 @@
       __u32 remote_qpn;
       __u32 remote_qkey;
       __u16 pkey_index;
+      __u16 reserved;
+      __u32 ah_num;
+      __u32 pad[4];
+      struct rxe_av av;
     } ud;
     struct {
       __aligned_u64 addr;
@@ -105,13 +109,12 @@
   __u32 sge_offset;
   __u32 reserved;
   union {
-    __u8 inline_data[0];
-    struct rxe_sge sge[0];
+    __DECLARE_FLEX_ARRAY(__u8, inline_data);
+    __DECLARE_FLEX_ARRAY(struct rxe_sge, sge);
   };
 };
 struct rxe_send_wqe {
   struct rxe_send_wr wr;
-  struct rxe_av av;
   __u32 status;
   __u32 state;
   __aligned_u64 iova;
@@ -129,6 +132,10 @@
   __u32 padding;
   struct rxe_dma_info dma;
 };
+struct rxe_create_ah_resp {
+  __u32 ah_num;
+  __u32 reserved;
+};
 struct rxe_create_cq_resp {
   struct mminfo mi;
 };