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>

board/mscc/common/spi.c

@@ -6,6 +6,7 @@
 #include <common.h>
 #include <asm/io.h>
 #include <spi.h>
+#include <linux/bitops.h>
 
 void external_cs_manage(struct udevice *dev, bool enable)
 {

board/mscc/jr2/jr2.c

@@ -9,6 +9,7 @@
 #include <asm/io.h>
 #include <led.h>
 #include <miiphy.h>
+#include <linux/bitops.h>
 #include <linux/delay.h>
 
 enum {

board/mscc/ocelot/ocelot.c

@@ -14,6 +14,7 @@
 #include <led.h>
 #include <wait_bit.h>
 #include <miiphy.h>
+#include <linux/bitops.h>
 
 DECLARE_GLOBAL_DATA_PTR;