tests: use scno.h in tests of relatively new syscalls

* tests/add_key.c: Include "scno.h" after <asm/unistd.h>.
* tests/copy_file_range.c: Likewise.
* tests/execveat.c: Likewise.
* tests/kexec_file_load.c: Likewise.
* tests/membarrier.c: Likewise.
* tests/memfd_create.c: Likewise.
* tests/mlock2.c: Likewise.
* tests/pkey_alloc.c: Likewise.
* tests/pkey_free.c: Likewise.
* tests/pkey_mprotect.c: Likewise.
* tests/preadv2-pwritev2.c: Likewise.
* tests/userfaultfd.c: Likewise.

tests/add_key.c

@@ -28,8 +28,8 @@
  */
 
 #include "tests.h"
-
 #include <asm/unistd.h>
+#include "scno.h"
 
 #ifdef __NR_add_key
 

tests/copy_file_range.c

@@ -29,6 +29,7 @@
 
 #include "tests.h"
 #include <asm/unistd.h>
+#include "scno.h"
 
 #if defined __NR_copy_file_range
 

tests/execveat.c

@@ -28,12 +28,14 @@
  */
 
 #include "tests.h"
-#include <stdio.h>
-#include <unistd.h>
 #include <asm/unistd.h>
+#include "scno.h"
 
 #ifdef __NR_execveat
 
+# include <stdio.h>
+# include <unistd.h>
+
 # define FILENAME "test.execveat\nfilename"
 # define Q_FILENAME "test.execveat\\nfilename"
 

tests/kexec_file_load.c

@@ -28,8 +28,8 @@
  */
 
 #include "tests.h"
-
 #include <asm/unistd.h>
+#include "scno.h"
 
 #ifdef __NR_kexec_file_load
 

tests/membarrier.c

@@ -27,6 +27,7 @@
 
 #include "tests.h"
 #include <asm/unistd.h>
+#include "scno.h"
 
 #ifdef __NR_membarrier
 

tests/memfd_create.c

@@ -1,5 +1,6 @@
 #include "tests.h"
 #include <asm/unistd.h>
+#include "scno.h"
 
 #ifdef __NR_memfd_create
 

tests/mlock2.c

@@ -27,6 +27,7 @@
 
 #include "tests.h"
 #include <asm/unistd.h>
+#include "scno.h"
 
 #ifdef __NR_mlock2
 

tests/pkey_alloc.c

@@ -28,10 +28,10 @@
  */
 
 #include "tests.h"
-
 #include <asm/unistd.h>
+#include "scno.h"
 
-#if defined __NR_pkey_alloc
+#ifdef __NR_pkey_alloc
 
 # include <stdio.h>
 # include <unistd.h>

tests/pkey_free.c

@@ -28,10 +28,10 @@
  */
 
 #include "tests.h"
-
 #include <asm/unistd.h>
+#include "scno.h"
 
-#if defined __NR_pkey_free
+#ifdef __NR_pkey_free
 
 # include <stdio.h>
 # include <unistd.h>

tests/pkey_mprotect.c

@@ -28,15 +28,14 @@
  */
 
 #include "tests.h"
-
 #include <asm/unistd.h>
+#include "scno.h"
 
-#if defined __NR_pkey_mprotect
+#ifdef __NR_pkey_mprotect
 
 # include <stdio.h>
 # include <unistd.h>
-
-#include <sys/mman.h>
+# include <sys/mman.h>
 
 const char *
 sprintptr(kernel_ulong_t ptr)

tests/preadv2-pwritev2.c

@@ -29,6 +29,7 @@
 
 #include "tests.h"
 #include <asm/unistd.h>
+#include "scno.h"
 
 #if defined __NR_preadv2 && defined __NR_pwritev2
 

tests/userfaultfd.c

@@ -28,6 +28,7 @@
 #include "tests.h"
 #include <fcntl.h>
 #include <asm/unistd.h>
+#include "scno.h"
 
 #if defined __NR_userfaultfd && defined O_CLOEXEC