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/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c
index 9dc4cd6..c49a041 100644
--- a/drivers/gpio/gpio-rcar.c
+++ b/drivers/gpio/gpio-rcar.c
@@ -12,6 +12,7 @@
 #include <errno.h>
 #include <asm/gpio.h>
 #include <asm/io.h>
+#include <linux/bitops.h>
 #include "../pinctrl/renesas/sh_pfc.h"
 
 #define GPIO_IOINTSEL	0x00	/* General IO/Interrupt Switching Register */