regulator: fix typos

Fix a couple of typos I found while working with this subsystem.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
diff --git a/include/linux/regulator/machine.h b/include/linux/regulator/machine.h
index 99a4e2e..87f5f17 100644
--- a/include/linux/regulator/machine.h
+++ b/include/linux/regulator/machine.h
@@ -41,7 +41,7 @@
 #define REGULATOR_CHANGE_DRMS		0x10
 
 /**
- * struct regulator_state - regulator state during low power syatem states
+ * struct regulator_state - regulator state during low power system states
  *
  * This describes a regulators state during a system wide low power state.
  *
@@ -117,10 +117,10 @@
 	/* mode to set on startup */
 	unsigned int initial_mode;
 
-	/* constriant flags */
+	/* constraint flags */
 	unsigned always_on:1;	/* regulator never off when system is on */
 	unsigned boot_on:1;	/* bootloader/firmware enabled regulator */
-	unsigned apply_uV:1;	/* apply uV constraint iff min == max */
+	unsigned apply_uV:1;	/* apply uV constraint if min == max */
 };
 
 /**