Bluetooth: Enable per-module dynamic debug messages

With the introduction of CONFIG_DYNAMIC_PRINTK_DEBUG it is possible to
allow debugging without having to recompile the kernel. This patch turns
all BT_DBG() calls into pr_debug() to support dynamic debug messages.

As a side effect all CONFIG_BT_*_DEBUG statements are now removed and
some broken debug entries have been fixed.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c
index f6f216e..744ed3f 100644
--- a/net/bluetooth/af_bluetooth.c
+++ b/net/bluetooth/af_bluetooth.c
@@ -41,11 +41,6 @@
 
 #include <net/bluetooth/bluetooth.h>
 
-#ifndef CONFIG_BT_SOCK_DEBUG
-#undef  BT_DBG
-#define BT_DBG(D...)
-#endif
-
 #define VERSION "2.14"
 
 /* Bluetooth sockets */
@@ -245,7 +240,7 @@
 	size_t copied;
 	int err;
 
-	BT_DBG("sock %p sk %p len %d", sock, sk, len);
+	BT_DBG("sock %p sk %p len %zu", sock, sk, len);
 
 	if (flags & (MSG_OOB))
 		return -EOPNOTSUPP;