Update to v5.11 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-5.11

Test: Built cuttlefish and flame images. Ran bionic unit tests on both.
Change-Id: Ie60337aafad4bda55af99b6c8fe9f56bf2fa787f
diff --git a/libc/kernel/uapi/rdma/rdma_user_rxe.h b/libc/kernel/uapi/rdma/rdma_user_rxe.h
index 8d8d23f..9fd21d7 100644
--- a/libc/kernel/uapi/rdma/rdma_user_rxe.h
+++ b/libc/kernel/uapi/rdma/rdma_user_rxe.h
@@ -147,4 +147,14 @@
 struct rxe_modify_srq_cmd {
   __aligned_u64 mmap_info_addr;
 };
+struct rxe_queue_buf {
+  __u32 log2_elem_size;
+  __u32 index_mask;
+  __u32 pad_1[30];
+  __u32 producer_index;
+  __u32 pad_2[31];
+  __u32 consumer_index;
+  __u32 pad_3[31];
+  __u8 data[];
+};
 #endif