tree-wide: fix comment/printk typos

"gadget", "through", "command", "maintain", "maintain", "controller", "address",
"between", "initiali[zs]e", "instead", "function", "select", "already",
"equal", "access", "management", "hierarchy", "registration", "interest",
"relative", "memory", "offset", "already",

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/Documentation/cgroups/memcg_test.txt b/Documentation/cgroups/memcg_test.txt
index b7eecec..fc8fa97 100644
--- a/Documentation/cgroups/memcg_test.txt
+++ b/Documentation/cgroups/memcg_test.txt
@@ -398,7 +398,7 @@
 	written to move_charge_at_immigrate.
 
  9.10 Memory thresholds
-	Memory controler implements memory thresholds using cgroups notification
+	Memory controller implements memory thresholds using cgroups notification
 	API. You can use Documentation/cgroups/cgroup_event_listener.c to test
 	it.