RDMA/core: Make rdma_counter.h compile stand alone

5.4-rc1 will have new compile time debugging to test that headers can be
compiled stand alone. Many rdma headers are already broken and excluded
from the mechanism, however to avoid compile failures during the merge
window fix enough so that the newly added header compiles clean.

Fixes: 413d334750 ("RDMA/counter: Add set/clear per-port auto mode support")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Mark Zhang <markz@mellanox.com>

include/rdma/rdma_counter.h

@@ -9,10 +9,10 @@
 #include <linux/mutex.h>
 #include <linux/pid_namespace.h>
 
-#include <rdma/ib_verbs.h>
 #include <rdma/restrack.h>
 #include <rdma/rdma_netlink.h>
 
+struct ib_device;
 struct ib_qp;
 
 struct auto_mode_param {

include/rdma/restrack.h

@@ -14,6 +14,9 @@
 #include <uapi/rdma/rdma_netlink.h>
 #include <linux/xarray.h>
 
+struct ib_device;
+struct sk_buff;
+
 /**
  * enum rdma_restrack_type - HW objects to track
  */
@@ -52,8 +55,6 @@ enum rdma_restrack_type {
 	RDMA_RESTRACK_MAX
 };
 
-struct ib_device;
-
 /**
  * struct rdma_restrack_entry - metadata per-entry
  */