DO NOT MERGE Fix potential DoS caused by delivering signal to BT process

Bug: 28885210
Change-Id: I63866d894bfca47464d6e42e3fb0357c4f94d360

 Conflicts:
	btif/co/bta_hh_co.c
	btif/src/btif_core.c
Merge conflict resolution of ag/1161415 (referencing ag/1164670)
- Directly into mnc-mr2-release

void bta_hl_co_put_echo_data (UINT8 app_id, tBTA_HL_MCL_HANDLE mcl_handle,
                              UINT16 data_size, UINT8 *p_data, UINT16 evt)
{
    tBTA_HL_STATUS status = BTA_HL_STATUS_FAIL;
    UNUSED(app_id);
    UNUSED(data_size);
    UNUSED(p_data);

    BTIF_TRACE_ERROR("%s not supported",__FUNCTION__);
    bta_hl_ci_put_echo_data(mcl_handle,  status, evt);
}

void bta_hl_co_put_echo_data (UINT8 app_id, tBTA_HL_MCL_HANDLE mcl_handle,
                              UINT16 data_size, UINT8 *p_data, UINT16 evt)
{
    tBTA_HL_STATUS status = BTA_HL_STATUS_FAIL;
    UNUSED(app_id);
    UNUSED(data_size);
    UNUSED(p_data);

    BTIF_TRACE_ERROR("%s not supported",__FUNCTION__);
    bta_hl_ci_put_echo_data(mcl_handle,  status, evt);
}
