gdb-server: Expand arch-specific structure type every time

As it is mentioned here [1] type's ID is unique name within containing
feature. That said if regs of the same type located in different features
it's required to insert type definition at least in each feature.

[1] https://sourceware.org/gdb/onlinedocs/gdb/Target-Description-Format.html#Types

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

src/server/gdb_server.c

@@ -2012,7 +2012,7 @@ static int lookup_add_arch_defined_types(char const **arch_defined_types_list[],
 				return 1;
 			} else {
 				if (!strcmp((*arch_defined_types_list)[j], type_id))
-					return 0;
+					return 1;
 			}
 		}
 	}