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 <[e-mail]>
Signed-off-by: Linus Walleij <[e-mail]>

drivers/pinctrl/uniphier/pinctrl-uniphier.h

···
 #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>