common: Drop linux/bitops.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/include/faraday/ftsdmc021.h b/include/faraday/ftsdmc021.h
index 3c979ce..e0e5eb3 100644
--- a/include/faraday/ftsdmc021.h
+++ b/include/faraday/ftsdmc021.h
@@ -14,6 +14,7 @@
 #define __FTSDMC021_H
 
 #ifndef __ASSEMBLY__
+#include <linux/bitops.h>
 struct ftsdmc021 {
 	unsigned int	tp1;		/* 0x00 - SDRAM Timing Parameter 1 */
 	unsigned int	tp2;		/* 0x04 - SDRAM Timing Parameter 2 */