buildman: patman: Fix -H when installed as a symlink

It is convenient to install symlinks to buildman and patman in the search
patch, such as /usr/local/bin. But when this is done, the -H option fails to
work because it looks in the directory containing the symlink instead of its
target. Fix this.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>

tools/buildman/control.py

@@ -101,7 +101,8 @@ def DoBuildman(options, args, toolchains=None, make_func=None, boards=None,
         pager = os.getenv('PAGER')
         if not pager:
             pager = 'more'
-        fname = os.path.join(os.path.dirname(sys.argv[0]), 'README')
+        fname = os.path.join(os.path.dirname(os.path.realpath(sys.argv[0])),
+                             'README')
         command.Run(pager, fname)
         return 0
 

tools/patman/patman.py

@@ -117,7 +117,8 @@ elif options.full_help:
     pager = os.getenv('PAGER')
     if not pager:
         pager = 'more'
-    fname = os.path.join(os.path.dirname(sys.argv[0]), 'README')
+    fname = os.path.join(os.path.dirname(os.path.realpath(sys.argv[0])),
+                         'README')
     command.Run(pager, fname)
 
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