msm: mhi: Enable MHI support for msmzirc

Add the msmzirc device in the list of supported PCI devices
by the MHI driver to enable to PCIe framework to probe MHI
in the event of discovering this device on the bus.

CRs-Fixed: 736039
Change-Id: I66eb5f67885d60c579c33c47ce696d66c6c428b5
Signed-off-by: Andrei Danaila <adanaila@codeaurora.org>