patman: Change the location of patman config file

Move the config file from ~/.config/patman to ~/.patman as it is
more appropriate to have it there. Update the same in the README.

Signed-off-by: Vikram Narayanan <vikram186@gmail.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Wolfgang Denk <wd@denx.de>
Acked-by: Simon Glass <sjg@chromium.org>

tools/patman/README

@@ -68,7 +68,7 @@ How to configure it
 For most cases patman will locate and use the file 'doc/git-mailrc' in
 your U-Boot directory. This contains most of the aliases you will need.
 
-To add your own, create a file ~/.config/patman directory like this:
+To add your own, create a file ~/.patman like this:
 
 >>>>
 # patman alias file

tools/patman/settings.py

@@ -69,7 +69,7 @@ def Setup(config_fname=''):
     """
     settings = ConfigParser.SafeConfigParser()
     if config_fname == '':
-        config_fname = '%s/.config/patman' % os.getenv('HOME')
+        config_fname = '%s/.patman' % os.getenv('HOME')
     if config_fname:
         settings.read(config_fname)