platform/arm: Don't specify "Android" in the debug print.

This function be used to determine the IP address of other OSs
e.g. linux.

Author: marcbonnici

devlib/platform/arm.py

@@ -108,7 +108,7 @@ def _get_target_ip_address(self, target):
                                     init_dtr=0) as tty:
             tty.sendline('su')  # this is, apprently, required to query network device
                                 # info by name on recent Juno builds...
-            self.logger.debug('Waiting for the Android shell prompt.')
+            self.logger.debug('Waiting for the shell prompt.')
             tty.expect(target.shell_prompt)
 
             self.logger.debug('Waiting for IP address...')