sched/x86: Remove unnecessary TBM3 check to update topology

Scheduling to the max performance core is enabled by
default for Turbo Boost Maxt Technology 3.0 capable platforms.

Remove the useless sysctl_sched_itmt_enabled check to
update sched topology for adding the prioritized core scheduling
flag.

Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: bp@suse.de
Cc: jolsa@redhat.com
Cc: linux-acpi@vger.kernel.org
Cc: linux-pm@vger.kernel.org
Cc: rjw@rjwysocki.net
Link: http://lkml.kernel.org/r/1484778629-4404-1-git-send-email-tim.c.chen@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

arch/x86/kernel/itmt.c

@@ -132,10 +132,8 @@ int sched_set_itmt_support(void)
 
 	sysctl_sched_itmt_enabled = 1;
 
-	if (sysctl_sched_itmt_enabled) {
-		x86_topology_update = true;
-		rebuild_sched_domains();
-	}
+	x86_topology_update = true;
+	rebuild_sched_domains();
 
 	mutex_unlock(&itmt_update_mutex);