Merge branch 'pci/controller/dra7xx'

- Simplify by using syscon_regmap_lookup_by_phandle_args() instead of
  syscon_regmap_lookup_by_phandle() followed by
  of_parse_phandle_with_fixed_args() or of_property_read_u32_index()
  (Krzysztof Kozlowski)

* pci/controller/dra7xx:
  PCI: dra7xx: Use syscon_regmap_lookup_by_phandle_args