pinctrl: uniphier: include <linux/build_bug.h> instead of <linux/bug.h>

The #includes <linux/bug.h> is here to use BUILD_BUG_ON_ZERO().

Thanks to commit bc6245e5efd7 ("bug: split BUILD_BUG stuff out into
<linux/build_bug.h>"), it is now possible to reduce the number of
headers pulled in.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/pinctrl/uniphier/pinctrl-uniphier.h b/drivers/pinctrl/uniphier/pinctrl-uniphier.h
index c075ecb..0a3d2ac 100644
--- a/drivers/pinctrl/uniphier/pinctrl-uniphier.h
+++ b/drivers/pinctrl/uniphier/pinctrl-uniphier.h
@@ -17,7 +17,7 @@
 #define __PINCTRL_UNIPHIER_H__
 
 #include <linux/bitops.h>
-#include <linux/bug.h>
+#include <linux/build_bug.h>
 #include <linux/kernel.h>
 #include <linux/types.h>