common: Move serial_printf() to the serial header

Move this function header to serial.h since this function is clearly
related to serial. The function itself stays in console.c since we don't
have a single serial file. DM and non-DM each has a separate file so we
would have to either create a new common serial file, or repeat the
function in both serial.c and serial-uclass.c, neither of which seem
worthwhile.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>

drivers/usb/gadget/core.c

@@ -16,6 +16,7 @@
  */
 
 #include <malloc.h>
+#include <serial.h>
 #include <usbdevice.h>
 
 #define MAX_INTERFACES 2

drivers/usb/gadget/designware_udc.c

@@ -8,6 +8,7 @@
  */
 
 #include <common.h>
+#include <serial.h>
 #include <asm/io.h>
 
 #include <env.h>

drivers/usb/gadget/ep0.c

@@ -37,6 +37,7 @@
  */
 
 #include <common.h>
+#include <serial.h>
 #include <usbdevice.h>
 
 #if 0
@@ -581,7 +582,7 @@ int ep0_recv_setup (struct urb *urb)
 			device->interface = le16_to_cpu (request->wIndex);
 			device->alternate = le16_to_cpu (request->wValue);
 			/*dbg_ep0(2, "set interface: %d alternate: %d", device->interface, device->alternate); */
-			serial_printf ("DEVICE_SET_INTERFACE.. event?\n");
+			serial_printf("DEVICE_SET_INTERFACE.. event?\n");
 			return 0;
 
 		case USB_REQ_GET_STATUS:

drivers/usb/musb-new/omap2430.c

@@ -10,6 +10,7 @@
  */
 #include <common.h>
 #include <dm.h>
+#include <serial.h>
 #include <dm/device-internal.h>
 #include <dm/lists.h>
 #include <linux/usb/otg.h>

drivers/usb/musb/musb_udc.c

@@ -38,6 +38,7 @@
  */
 
 #include <common.h>
+#include <serial.h>
 #include <usbdevice.h>
 #include <usb/udc.h>
 #include "../gadget/ep0.h"

drivers/usb/musb/omap3.c

@@ -16,6 +16,7 @@
  * ------------------------------------------------------------------------
  */
 
+#include <serial.h>
 #include <asm/omap_common.h>
 #include <twl4030.h>
 #include <twl6030.h>

include/common.h

@@ -310,13 +310,6 @@ int ulz4fn(const void *src, size_t srcn, void *dst, size_t *dstn);
 /* lib/vsprintf.c */
 #include <vsprintf.h>
 
-/*
- * STDIO based functions (can always be used)
- */
-/* serial stuff */
-int	serial_printf (const char *fmt, ...)
-		__attribute__ ((format (__printf__, 1, 2)));
-
 /* lib/net_utils.c */
 #include <net.h>
 

include/serial.h

@@ -324,4 +324,15 @@ void pl01x_serial_initialize(void);
 void pxa_serial_initialize(void);
 void sh_serial_initialize(void);
 
+/**
+ * serial_printf() - Write a formatted string to the serial console
+ *
+ * The total size of the output must be less than CONFIG_SYS_PBSIZE.
+ *
+ * @fmt: Printf format string, followed by format arguments
+ * @return number of characters written
+ */
+int serial_printf(const char *fmt, ...)
+		__attribute__ ((format (__printf__, 1, 2)));
+
 #endif