pinctrl: fix dangling comment

This comment was referring to an older PINMUX define, it should
be PINCTRL now.

Reported-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Dong Aisheng <dong.aisheng@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/include/linux/pinctrl/machine.h b/include/linux/pinctrl/machine.h
index e4d1de7..9c4a198 100644
--- a/include/linux/pinctrl/machine.h
+++ b/include/linux/pinctrl/machine.h
@@ -163,5 +163,5 @@
 	return 0;
 }
 
-#endif /* !CONFIG_PINMUX */
+#endif /* !CONFIG_PINCTRL */
 #endif