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/arch/arm/mach-at91/include/mach/at91_sfr.h b/arch/arm/mach-at91/include/mach/at91_sfr.h
index 0300c33..4517df4 100644
--- a/arch/arm/mach-at91/include/mach/at91_sfr.h
+++ b/arch/arm/mach-at91/include/mach/at91_sfr.h
@@ -9,6 +9,7 @@
 #ifndef __AT91_SFR_H
 #define __AT91_SFR_H
 
+#include <linux/bitops.h>
 struct atmel_sfr {
 	u32 reserved1;	/* 0x00 */
 	union {