feat(rmm): add PCIe IO info to Boot manifest

- Add PCIe and SMMUv3 related information to DTS for
  configurations with ENABLE_RME=1.
- Add entries for PCIe IO memory regions to Boot manifest
- Update RMMD_MANIFEST_VERSION_MINOR from 3 to 4.
- Read PCIe related information from DTB and write it to
  Boot manifest.
- Rename structures that used to describe DRAM layout
  and now describe both DRAM and PCIe IO memory regions:
  - ns_dram_bank -> memory_bank
  - ns_dram_info -> memory_info.

Change-Id: Ib75d1af86076f724f5c330074e231f1c2ba8e21d
Signed-off-by: AlexeiFedorov <Alexei.Fedorov@arm.com>
diff --git a/common/fdt_wrappers.c b/common/fdt_wrappers.c
index b213ffa..8638351 100644
--- a/common/fdt_wrappers.c
+++ b/common/fdt_wrappers.c
@@ -277,7 +277,7 @@
 	return err;
 }
 
-static uint64_t fdt_read_prop_cells(const fdt32_t *prop, int nr_cells)
+uint64_t fdt_read_prop_cells(const fdt32_t *prop, int nr_cells)
 {
 	uint64_t reg = fdt32_to_cpu(prop[0]);