common: Drop linux/bug.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/pinctrl/uniphier/pinctrl-uniphier.h b/drivers/pinctrl/uniphier/pinctrl-uniphier.h
index 8f83eca..5951835 100644
--- a/drivers/pinctrl/uniphier/pinctrl-uniphier.h
+++ b/drivers/pinctrl/uniphier/pinctrl-uniphier.h
@@ -8,6 +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>