51894fbfb9
Add code to notify mhi about link down.In scenario of link down recovery failure with SSR enabled, cnss-daemon posts a QMI req during subsystem shutdown execution, the mhi layer tries to access doorbell register to process the qmi msg but it leads to NOC error as pci link is down. So added code to notify mhi about link down to avoid NOC error. Change-Id: I3ccc2cbda37e271f14f3821bb055db3107dac228