chore(spe): rename spe_disable() to spe_stop()

During CPU power down, we stop the profiling by calling spe_disable()
function. From TF-A point of view, enable/disable means the avaibility
of the feature for lower EL. In this case we are not actully disabling
the feautre but stoping it before power down.

Signed-off-by: Manish Pandey <manish.pandey2@arm.com>
Change-Id: I6e3b39c5c35d330c51e7ac715446a8b36bf9531f
diff --git a/lib/psci/psci_common.c b/lib/psci/psci_common.c
index 60449f6..9f0b190 100644
--- a/lib/psci/psci_common.c
+++ b/lib/psci/psci_common.c
@@ -1303,7 +1303,7 @@
 	 * before exiting coherency.
 	 */
 	if (is_feat_spe_supported()) {
-		spe_disable();
+		spe_stop();
 	}
 
 }