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-keystone/clock.c b/arch/arm/mach-keystone/clock.c
index 3c46824..0c59515 100644
--- a/arch/arm/mach-keystone/clock.c
+++ b/arch/arm/mach-keystone/clock.c
@@ -9,6 +9,7 @@
 #include <common.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/clock_defs.h>
+#include <linux/bitops.h>
 
 /* DEV and ARM speed definitions as specified in DEVSPEED register */
 int __weak speeds[DEVSPEED_NUMSPDS] = {