fix typos concerning "management"

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 3239d1c..c2c598e 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -458,7 +458,7 @@
 	IDE_DFLAG_DOORLOCKING		= (1 << 15),
 	/* disallow DMA */
 	IDE_DFLAG_NODMA			= (1 << 16),
-	/* powermanagment told us not to do anything, so sleep nicely */
+	/* powermanagement told us not to do anything, so sleep nicely */
 	IDE_DFLAG_BLOCKED		= (1 << 17),
 	/* sleeping & sleep field valid */
 	IDE_DFLAG_SLEEPING		= (1 << 18),