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/rdma/rdma_user_rxe.h b/libc/kernel/uapi/rdma/rdma_user_rxe.h
index cdb00c7..2476699 100644
--- a/libc/kernel/uapi/rdma/rdma_user_rxe.h
+++ b/libc/kernel/uapi/rdma/rdma_user_rxe.h
@@ -52,7 +52,7 @@
 };
 struct rxe_send_wr {
   __aligned_u64 wr_id;
-  __u32 num_sge;
+  __u32 reserved;
   __u32 opcode;
   __u32 send_flags;
   union {
@@ -128,7 +128,7 @@
 };
 struct rxe_recv_wqe {
   __aligned_u64 wr_id;
-  __u32 num_sge;
+  __u32 reserved;
   __u32 padding;
   struct rxe_dma_info dma;
 };