build: Add gcc and binutils version to mcu data dictionary

Store the gcc and binutils versions used in the compilation of the
firmware in the firmware data dictionary.  Forward that information to
the log so it is available during debugging.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

klippy/msgproto.py

@@ -188,7 +188,7 @@ class MessageParser:
         self.messages_by_name = {}
         self.static_strings = {}
         self.config = {}
-        self.version = ""
+        self.version = self.build_versions = ""
         self.raw_identify_data = ""
         self._init_messages(DefaultMessages, DefaultMessages.keys())
     def check_packet(self, s):
@@ -318,6 +318,7 @@ class MessageParser:
             self.static_strings = { int(k): v for k, v in static_strings.items() }
             self.config.update(data.get('config', {}))
             self.version = data.get('version', '')
+            self.build_versions = data.get('build_versions', '')
         except error as e:
             raise
         except Exception as e: