moveconfig: Add an option to skip prompts

At present it is not easy to use moveconfig from a script since it asks
for user input a few times. Add a -y option to skip this and assume that
'y' was entered.

Signed-off-by: Simon Glass <sjg@chromium.org>

tools/moveconfig.py

@@ -162,6 +162,10 @@ Available options
  -v, --verbose
    Show any build errors as boards are built
 
+ -y, --yes
+   Instead of prompting, automatically go ahead with all operations. This
+   includes cleaning up headers and CONFIG_SYS_EXTRA_OPTIONS.
+
 To see the complete list of supported options, run
 
   $ tools/moveconfig.py -h
@@ -481,6 +485,7 @@ def cleanup_headers(configs, options):
       configs: A list of CONFIGs to remove.
       options: option flags.
     """
+    if not options.yes:
         while True:
             choice = raw_input('Clean up headers? [y/n]: ').lower()
             print choice
@@ -560,8 +565,10 @@ def cleanup_extra_options(configs, options):
       configs: A list of CONFIGs to remove.
       options: option flags.
     """
+    if not options.yes:
         while True:
-        choice = raw_input('Clean up CONFIG_SYS_EXTRA_OPTIONS? [y/n]: ').lower()
+            choice = (raw_input('Clean up CONFIG_SYS_EXTRA_OPTIONS? [y/n]: ').
+                      lower())
             print choice
             if choice == 'y' or choice == 'n':
                 break
@@ -1251,6 +1258,8 @@ def main():
                       help='the number of jobs to run simultaneously')
     parser.add_option('-r', '--git-ref', type='string',
                       help='the git ref to clone for building the autoconf.mk')
+    parser.add_option('-y', '--yes', action='store_true', default=False,
+                      help="respond 'yes' to any prompts")
     parser.add_option('-v', '--verbose', action='store_true', default=False,
                       help='show any build errors as boards are built')
     parser.usage += ' CONFIG ...'