msm: pcie: add device ID for MDM9630

MDM9630 can be used as either PCIe root complex or PCIe endpoint.
So it has a unique PCIe device ID different from all other chipsets
which have any PCIe module. Add the support for its device ID in
this change.

Change-Id: I23c66bdd5106e56de8bc5594a2b81860d9a6cb0c
Signed-off-by: Yan He <yanhe@codeaurora.org>