serial: arm_dcc: Remove CONFIG_ARM_DCC_MULTI option

CONFIG_ARM_DCC_MULTI should be also removed in the patch
"serial: Remove CONFIG_SERIAL_MULTI from serial drivers"
(sha1: a3827250606895ec2dd4b8d867342b7cabf3692f)
Because the driver defines serial_* functions
which cause conflict with serial.c (multiple definition of serial_*)

Removing CONFIG_SERIAL_MULTI function also require to define
default_serial_console for cases where another serial driver
is not available in the system.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Marek Vasut <marex@denx.de>

common/stdio.c

@@ -207,7 +207,7 @@ int stdio_init (void)
 	/* Initialize the list */
 	INIT_LIST_HEAD(&(devs.list));
 
-#ifdef CONFIG_ARM_DCC_MULTI
+#ifdef CONFIG_ARM_DCC
 	drv_arm_dcc_init ();
 #endif
 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)

drivers/serial/arm_dcc.c

@@ -89,15 +89,6 @@
 
 #define TIMEOUT_COUNT 0x4000000
 
-#ifndef CONFIG_ARM_DCC_MULTI
-#define arm_dcc_init serial_init
-void serial_setbrg(void) {}
-#define arm_dcc_getc serial_getc
-#define arm_dcc_putc serial_putc
-#define arm_dcc_puts serial_puts
-#define arm_dcc_tstc serial_tstc
-#endif
-
 int arm_dcc_init(void)
 {
 	return 0;
@@ -147,7 +138,6 @@ int arm_dcc_tstc(void)
 	return reg;
 }
 
-#ifdef CONFIG_ARM_DCC_MULTI
 static struct stdio_dev arm_dcc_dev;
 
 int drv_arm_dcc_init(void)
@@ -167,4 +157,8 @@ int drv_arm_dcc_init(void)
 
 	return stdio_register(&arm_dcc_dev);
 }
-#endif
+
+__weak struct serial_device *default_serial_console(void)
+{
+	return NULL;
+}

include/stdio_dev.h

@@ -99,7 +99,7 @@ struct list_head* stdio_get_list(void);
 struct stdio_dev* stdio_get_by_name(const char* name);
 struct stdio_dev* stdio_clone(struct stdio_dev *dev);
 
-#ifdef CONFIG_ARM_DCC_MULTI
+#ifdef CONFIG_ARM_DCC
 int drv_arm_dcc_init(void);
 #endif
 #ifdef CONFIG_LCD