refactor(manifest): rename `name` to `description`

Rename the `name` field of `struct memory_region` to `description`, to
match the name that field has in the DTS.

Change-Id: I5395d0e1d97ef1d468707729d9d56656be36755c
Signed-off-by: Karl Meakin <karl.meakin@arm.com>
diff --git a/inc/hf/ffa_partition_manifest.h b/inc/hf/ffa_partition_manifest.h
index 5005d8c..f7d45df 100644
--- a/inc/hf/ffa_partition_manifest.h
+++ b/inc/hf/ffa_partition_manifest.h
@@ -78,7 +78,7 @@
  * device that has access to this memory region.
  */
 struct memory_region {
-	struct string name;
+	struct string description;
 	/**
 	 * Specify PA, VA for S-EL0 partitions or IPA
 	 * for S-EL1 partitions - optional.