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

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

By replacing it with <linux/build_bug.h>, we can reduce the number of
headers pulled in.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/drivers/pinctrl/uniphier/pinctrl-uniphier.h b/drivers/pinctrl/uniphier/pinctrl-uniphier.h
index 6557f6a..55f2b1a 100644
--- a/drivers/pinctrl/uniphier/pinctrl-uniphier.h
+++ b/drivers/pinctrl/uniphier/pinctrl-uniphier.h
@@ -8,7 +8,7 @@
 #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>