smptests: Use priority ceiling for locked print

In case the printf() blocks on a semaphore it was possible to end up in
a livelock.

testsuites/smptests/smp08/init.c

@@ -78,7 +78,7 @@ rtems_task Init(
     sprintf(ch, "%02" PRId32, i );
     status = rtems_task_create(
       rtems_build_name( 'T', 'A', ch[0], ch[1] ),
-      1,
+      2,
       RTEMS_MINIMUM_STACK_SIZE,
       RTEMS_DEFAULT_MODES,
       RTEMS_DEFAULT_ATTRIBUTES,

testsuites/support/src/locked_print.c

@@ -36,7 +36,8 @@ void locked_print_initialize(void)
     rtems_build_name ('S', 'E', 'M', '1'),
     1,                                             
     RTEMS_LOCAL                   |
-    RTEMS_SIMPLE_BINARY_SEMAPHORE |
+    RTEMS_BINARY_SEMAPHORE |
+    RTEMS_PRIORITY_CEILING |
     RTEMS_PRIORITY,
     1,
     &locked_print_semaphore