stdio/device: rework function naming convention

So far the console API uses the following naming convention:

	======Extract======
	typedef struct device_t;

	int	device_register (device_t * dev);
	int	devices_init (void);
	int	device_deregister(char *devname);
	struct list_head* device_get_list(void);
	device_t* device_get_by_name(char* name);
	device_t* device_clone(device_t *dev);
	=======

which is too generic and confusing.

Instead of using device_XX and device_t we change this
into stdio_XX and stdio_dev

This will also allow to add later a generic device mechanism in order
to have support for multiple devices and driver instances.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

Edited commit message.

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/common/cmd_log.c b/common/cmd_log.c
index d422d9f..3653fe1 100644
--- a/common/cmd_log.c
+++ b/common/cmd_log.c
@@ -42,7 +42,7 @@
 
 #include <common.h>
 #include <command.h>
-#include <devices.h>
+#include <stdio_dev.h>
 #include <post.h>
 #include <logbuff.h>
 
@@ -142,7 +142,7 @@
 
 int drv_logbuff_init (void)
 {
-	device_t logdev;
+	struct stdio_dev logdev;
 	int rc;
 
 	/* Device initialization */
@@ -154,7 +154,7 @@
 	logdev.putc  = logbuff_putc;		/* 'putc' function */
 	logdev.puts  = logbuff_puts;		/* 'puts' function */
 
-	rc = device_register (&logdev);
+	rc = stdio_register (&logdev);
 
 	return (rc == 0) ? 1 : rc;
 }