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-versal/include/mach/hardware.h b/arch/arm/mach-versal/include/mach/hardware.h
index e26beab..9af5afd 100644
--- a/arch/arm/mach-versal/include/mach/hardware.h
+++ b/arch/arm/mach-versal/include/mach/hardware.h
@@ -3,6 +3,10 @@
  * Copyright 2016 - 2018 Xilinx, Inc.
  */
 
+#ifndef __ASSEMBLY__
+#include <linux/bitops.h>
+#endif
+
 #define VERSAL_CRL_APB_BASEADDR	0xFF5E0000
 
 #define CRL_APB_TIMESTAMP_REF_CTRL_CLKACT_BIT	BIT(25)