OSHMEM: fixed compilation warning

- suppressed warning like: warning: no previous prototype for
  'shmemx_XXXXX_OP' [-Wmissing-prototypes]

Signed-off-by: Sergey Oblomov <sergeyo@mellanox.com>

oshmem/shmem/c/shmem_add.c

@@ -11,6 +11,7 @@
 
 #include "oshmem/constants.h"
 #include "oshmem/include/shmem.h"
+#include "oshmem/include/shmemx.h"
 
 #include "oshmem/runtime/runtime.h"
 #include "oshmem/op/op.h"

oshmem/shmem/c/shmem_cswap.c

@@ -11,6 +11,7 @@
 
 #include "oshmem/constants.h"
 #include "oshmem/include/shmem.h"
+#include "oshmem/include/shmemx.h"
 
 #include "oshmem/runtime/runtime.h"
 

oshmem/shmem/c/shmem_fadd.c

@@ -11,6 +11,7 @@
 
 #include "oshmem/constants.h"
 #include "oshmem/include/shmem.h"
+#include "oshmem/include/shmemx.h"
 
 #include "oshmem/runtime/runtime.h"
 

oshmem/shmem/c/shmem_fetch.c

@@ -11,6 +11,7 @@
 
 #include "oshmem/constants.h"
 #include "oshmem/include/shmem.h"
+#include "oshmem/include/shmemx.h"
 
 #include "oshmem/runtime/runtime.h"
 

oshmem/shmem/c/shmem_finc.c

@@ -11,6 +11,7 @@
 
 #include "oshmem/constants.h"
 #include "oshmem/include/shmem.h"
+#include "oshmem/include/shmemx.h"
 
 #include "oshmem/runtime/runtime.h"
 

oshmem/shmem/c/shmem_g.c

@@ -11,6 +11,7 @@
 
 #include "oshmem/constants.h"
 #include "oshmem/include/shmem.h"
+#include "oshmem/include/shmemx.h"
 
 #include "oshmem/runtime/runtime.h"
 

oshmem/shmem/c/shmem_inc.c

@@ -11,6 +11,7 @@
 
 #include "oshmem/constants.h"
 #include "oshmem/include/shmem.h"
+#include "oshmem/include/shmemx.h"
 
 #include "oshmem/runtime/runtime.h"
 

oshmem/shmem/c/shmem_p.c

@@ -11,6 +11,7 @@
 
 #include "oshmem/constants.h"
 #include "oshmem/include/shmem.h"
+#include "oshmem/include/shmemx.h"
 
 #include "oshmem/runtime/runtime.h"
 

oshmem/shmem/c/shmem_reduce.c

@@ -11,6 +11,7 @@
 
 #include "oshmem/constants.h"
 #include "oshmem/include/shmem.h"
+#include "oshmem/include/shmemx.h"
 
 #include "oshmem/runtime/runtime.h"
 

oshmem/shmem/c/shmem_set.c

@@ -11,6 +11,7 @@
 
 #include "oshmem/constants.h"
 #include "oshmem/include/shmem.h"
+#include "oshmem/include/shmemx.h"
 
 #include "oshmem/runtime/runtime.h"
 

oshmem/shmem/c/shmem_swap.c

@@ -11,6 +11,7 @@
 
 #include "oshmem/constants.h"
 #include "oshmem/include/shmem.h"
+#include "oshmem/include/shmemx.h"
 
 #include "oshmem/runtime/runtime.h"
 

oshmem/shmem/c/shmem_wait.c

@@ -11,6 +11,7 @@
 
 #include "oshmem/constants.h"
 #include "oshmem/include/shmem.h"
+#include "oshmem/include/shmemx.h"
 
 #include "oshmem/runtime/runtime.h"