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/sifive-gpio.c b/drivers/gpio/sifive-gpio.c
index 76d5a1d3..24da3b3 100644
--- a/drivers/gpio/sifive-gpio.c
+++ b/drivers/gpio/sifive-gpio.c
@@ -11,6 +11,7 @@
 #include <asm/io.h>
 #include <errno.h>
 #include <asm/gpio.h>
+#include <linux/bitops.h>
 
 static int sifive_gpio_probe(struct udevice *dev)
 {