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/board/freescale/imx8mq_evk/imx8mq_evk.c b/board/freescale/imx8mq_evk/imx8mq_evk.c
index b2f464a..ae3be57 100644
--- a/board/freescale/imx8mq_evk/imx8mq_evk.c
+++ b/board/freescale/imx8mq_evk/imx8mq_evk.c
@@ -21,6 +21,7 @@
 #include <asm/mach-imx/mxc_i2c.h>
 #include <asm/arch/clock.h>
 #include <spl.h>
+#include <linux/bitops.h>
 #include <power/pmic.h>
 #include <power/pfuze100_pmic.h>
 #include "../common/pfuze.h"