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/drivers/clk/mpc83xx_clk.c b/drivers/clk/mpc83xx_clk.c
index 4c77c8d..8d96ec7 100644
--- a/drivers/clk/mpc83xx_clk.c
+++ b/drivers/clk/mpc83xx_clk.c
@@ -14,6 +14,7 @@
 #include <dm/lists.h>
 #include <dt-bindings/clk/mpc83xx-clk.h>
 #include <asm/arch/soc.h>
+#include <linux/bitops.h>
 
 #include "mpc83xx_clk.h"