bus: mhi: pci_generic: Set register access length for MHI driver

MHI driver requires register space length to add range checks and
prevent memory region accesses outside of that for MMIO space.
Set it from the PCI generic controller driver before registering
the MHI controller.

Link: https://lore.kernel.org/r/1620330705-40192-6-git-send-email-bbhatt@codeaurora.org


Reviewed-by: Hemant Kumar <hemantk@codeaurora.org>
Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20210802051255.5771-8-manivannan.sadhasivam@linaro.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>