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/include/vsc9953.h b/include/vsc9953.h
index fe072da..5d6fc77 100644
--- a/include/vsc9953.h
+++ b/include/vsc9953.h
@@ -11,6 +11,7 @@
 #include <config.h>
 #include <miiphy.h>
 #include <asm/types.h>
+#include <linux/bitops.h>
 
 #define VSC9953_OFFSET			(CONFIG_SYS_CCSRBAR_DEFAULT + 0x800000)