msm: mhi_dev: Change to not enable ERDB interrupts

We see spurious interrupts during modem standby if ERDB is enabled.
Making changes to not enable ERDB interrupts.

Change-Id: I5a51101b54f67e7c8e56d46c56bddd739c8852a5
Signed-off-by: Subramanian Ananthanarayanan <skananth@codeaurora.org>
Signed-off-by: Gauri Joshi <gaurjosh@codeaurora.org>