Merge branch 'pci/endpoint'

Merge branch 'pci/endpoint'

- Make pci_epf_bus_type const (Ricardo B. Marliere)

- Update pci_epf_alloc_space() interface and move bar_fixed_size[] testing
  from pci_epf_test_alloc_space() and pci_epf_configure_bar() into it
  (Niklas Cassel)

- Drop redundant size & alignment checking from epf_ntb_db_bar_init() since
  pci_epf_alloc_space() already does it (Niklas Cassel)

- Fix ntb_register_device() name leak in error path (Yang Yingliang)

- Return actual error code for pci_vntb_probe() failure (Yang Yingliang)

- Prefix sysfs function names with "pci_epf_mhi_", e.g.,
  "/sys/kernel/config/functions/pci_epf_mhi_sdx55", to leave room for other
  endpoint functions (Manivannan Sadhasivam)

- Add EPF MHI support for SA8775P SoC (Mrinmay Sarkar)

- Consolidate endpoint BAR hardware description in new struct
  pci_epc_bar_desc (Niklas Cassel)

- Drop only_64bit on reserved BARs (Niklas Cassel)

* pci/endpoint:
  PCI: endpoint: Drop only_64bit on reserved BARs
  PCI: endpoint: Clean up hardware description for BARs
  PCI: epf-mhi: Add support for SA8775P SoC
  PCI: epf-mhi: Add "pci_epf_mhi_" prefix to the function names
  PCI: epf-vntb: Return actual error code during pci_vntb_probe() failure
  NTB: fix possible name leak in ntb_register_device()
  PCI: endpoint: pci-epf-vntb: Remove superfluous checks for pci_epf_alloc_space() API
  PCI: endpoint: pci-epf-test: Remove superfluous checks for pci_epf_alloc_space() API
  PCI: endpoint: Improve pci_epf_alloc_space() API
  PCI: endpoint: Refactor pci_epf_alloc_space() API
  PCI: endpoint: Make pci_epf_bus_type const