Bluetooth: Classic: fix dynamic local name compilation

Add missing function declaration for bt_br_write_local_name() to
resolve compilation errors when CONFIG_BT_DEVICE_NAME_DYNAMIC
is enabled. The function is now properly declared in classic.h
header file to avoid implicit declaration warnings.

Signed-off-by: Kai Cheng <chengkai@xiaomi.com>

Author: chengkai15

subsys/bluetooth/host/hci_core.c

@@ -48,6 +48,7 @@
 
 #include "addr_internal.h"
 #include "adv.h"
+#include "classic/br.h"
 #include "common/hci_common_internal.h"
 #include "common/bt_str.h"
 #include "common/rpa.h"
@@ -66,10 +67,6 @@
 #include "settings.h"
 #include "smp.h"
 
-#if defined(CONFIG_BT_CLASSIC)
-#include "classic/br.h"
-#endif
-
 #if defined(CONFIG_BT_DF)
 #include "direction_internal.h"
 #endif /* CONFIG_BT_DF */
@@ -3888,10 +3885,9 @@ static int le_init(void)
 	return  le_set_event_mask();
 }
 
-#if !defined(CONFIG_BT_CLASSIC)
-static int bt_br_init(void)
+static int br_hci_init(void)
 {
-#if defined(CONFIG_BT_CONN)
+#if !defined(CONFIG_BT_CLASSIC) && defined(CONFIG_BT_CONN)
 	struct net_buf *rsp;
 	int err;
 
@@ -3907,11 +3903,10 @@ static int bt_br_init(void)
 
 	read_buffer_size_complete(rsp);
 	net_buf_unref(rsp);
-#endif /* CONFIG_BT_CONN */
+#endif /* !CONFIG_BT_CLASSIC && CONFIG_BT_CONN */
 
 	return 0;
 }
-#endif /* !defined(CONFIG_BT_CLASSIC) */
 
 static int set_event_mask(void)
 {
@@ -4198,7 +4193,7 @@ static int hci_init(void)
 	}
 
 	if (BT_FEAT_BREDR(bt_dev.features)) {
-		err = bt_br_init();
+		err = br_hci_init();
 		if (err) {
 			return err;
 		}