08130fe048
Do this here as puc(4) disallows single-port instances; at least one multi-port PCIe UART chip (in this case, the ASIX MCS9922) present separate PCI configuration space (functions) for each UART. Tested using lrzsz and a null-modem cable. The ExpressCard/34 variants containing the MCS9922 should also use MSI with this change. Reviewed by: jhb, imp, rpokala MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D9123