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/phy/omap-usb2-phy.c b/drivers/phy/omap-usb2-phy.c
index 160a386..0793b97 100644
--- a/drivers/phy/omap-usb2-phy.c
+++ b/drivers/phy/omap-usb2-phy.c
@@ -13,6 +13,7 @@
 #include <generic-phy.h>
 #include <regmap.h>
 #include <syscon.h>
+#include <linux/bitops.h>
 #include <linux/err.h>
 
 #define OMAP_USB2_CALIBRATE_FALSE_DISCONNECT	BIT(0)