Bluetooth: Use GFP_KERNEL in user context

The allocation in mgmt_control() code are in user context and not locked
by any spinlock, so it's not recommended the use of GFP_ATOMIC there.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index c322381..c304688 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -1581,7 +1581,7 @@
 	if (msglen < sizeof(*hdr))
 		return -EINVAL;
 
-	buf = kmalloc(msglen, GFP_ATOMIC);
+	buf = kmalloc(msglen, GFP_KERNEL);
 	if (!buf)
 		return -ENOMEM;