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/cache/cache-v5l2.c b/drivers/cache/cache-v5l2.c
index 1373e7c..51c074b 100644
--- a/drivers/cache/cache-v5l2.c
+++ b/drivers/cache/cache-v5l2.c
@@ -11,6 +11,7 @@
 #include <hang.h>
 #include <asm/io.h>
 #include <dm/ofnode.h>
+#include <linux/bitops.h>
 
 struct l2cache {
 	volatile u64	configure;