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/x86/lib/scu.c b/arch/x86/lib/scu.c
index 41e6739..d29d701 100644
--- a/arch/x86/lib/scu.c
+++ b/arch/x86/lib/scu.c
@@ -15,6 +15,7 @@
 #include <syscon.h>
 #include <asm/cpu.h>
 #include <asm/scu.h>
+#include <linux/bitops.h>
 #include <linux/delay.h>
 #include <linux/errno.h>
 #include <linux/io.h>