regulator: Fix regulator_get_{optional,exclusive}() documentation

regulator_get_optional() doesn't hold an exclusive reference to
the regulator. Fix the documentation and reword the exclusive
documentation to fix the grammatical error "this reference is
held".
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mark Brown <broonie@linaro.org>

drivers/regulator/core.c

@@ -1430,9 +1430,9 @@ EXPORT_SYMBOL_GPL(regulator_get);
  *
  * Returns a struct regulator corresponding to the regulator producer,
  * or IS_ERR() condition containing errno.  Other consumers will be
- * unable to obtain this reference is held and the use count for the
- * regulator will be initialised to reflect the current state of the
- * regulator.
+ * unable to obtain this regulator while this reference is held and the
+ * use count for the regulator will be initialised to reflect the current
+ * state of the regulator.
  *
  * This is intended for use by consumers which cannot tolerate shared
  * use of the regulator such as those which need to force the
@@ -1456,10 +1456,7 @@ EXPORT_SYMBOL_GPL(regulator_get_exclusive);
  * @id: Supply name or regulator ID.
  *
  * Returns a struct regulator corresponding to the regulator producer,
- * or IS_ERR() condition containing errno.  Other consumers will be
- * unable to obtain this reference is held and the use count for the
- * regulator will be initialised to reflect the current state of the
- * regulator.
+ * or IS_ERR() condition containing errno.
  *
  * This is intended for use by consumers for devices which can have
  * some supplies unconnected in normal use, such as some MMC devices.