torture: add missing dependency on hrtimer.h

JIRA: https://issues.redhat.com/browse/RHEL-35759

commit ea115c2
Author: Kent Overstreet <kent.overstreet@linux.dev>
Date:   Sun, 17 Dec 2023 20:01:01 -0500

    torture: add missing dependency on hrtimer.h

    Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Signed-off-by: Waiman Long <longman@redhat.com>

Author: Waiman-Long

include/linux/torture.h

@@ -21,6 +21,7 @@
 #include <linux/debugobjects.h>
 #include <linux/bug.h>
 #include <linux/compiler.h>
+#include <linux/hrtimer.h>
 
 /* Definitions for a non-string torture-test module parameter. */
 #define torture_param(type, name, init, msg) \