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/include/asm/arch-stm32f7/syscfg.h b/arch/arm/include/asm/arch-stm32f7/syscfg.h
index ce2a952..985ae25 100644
--- a/arch/arm/include/asm/arch-stm32f7/syscfg.h
+++ b/arch/arm/include/asm/arch-stm32f7/syscfg.h
@@ -7,6 +7,10 @@
 #ifndef _STM32_SYSCFG_H
 #define _STM32_SYSCFG_H
 
+#ifndef __ASSEMBLY__
+#include <linux/bitops.h>
+#endif
+
 struct stm32_syscfg_regs {
 	u32 memrmp;
 	u32 pmc;