Bluetooth: Check for waiting HAL callbacks

Test: Bluetooth boots, turns on/off
Change-Id: Iad2f359a78c9acbf0fe44740ed0813de462ce57c
diff --git a/bluetooth/1.0/default/hci_internals.h b/bluetooth/1.0/default/hci_internals.h
index d839590..d5714be 100644
--- a/bluetooth/1.0/default/hci_internals.h
+++ b/bluetooth/1.0/default/hci_internals.h
@@ -42,3 +42,6 @@
 const size_t HCI_LENGTH_OFFSET_EVT = 1;
 
 const size_t HCI_PREAMBLE_SIZE_MAX = HCI_ACL_PREAMBLE_SIZE;
+
+// Event codes (Volume 2, Part E, 7.7.14)
+const uint8_t HCI_COMMAND_COMPLETE_EVENT = 0x0E;