binman: Pass the toolpath to tests

Tools like ifwitool may not be available in the PATH, but are available in
the build. These tools may be needed by tests, so allow tests to use the
--toolpath flag.

Also use this flag with travis.

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

tools/binman/ftest.py

@@ -144,7 +144,8 @@ class TestFunctional(unittest.TestCase):
         self._indir = None
 
     @classmethod
-    def setup_test_args(cls, preserve_indir=False, preserve_outdirs=False):
+    def setup_test_args(cls, preserve_indir=False, preserve_outdirs=False,
+                        toolpath=None):
         """Accept arguments controlling test execution
 
         Args:
@@ -153,9 +154,11 @@ class TestFunctional(unittest.TestCase):
             preserve_outdir: Preserve the output directories used by tests. Each
                 test has its own, so this is normally only useful when running a
                 single test.
+            toolpath: ist of paths to use for tools
         """
         cls.preserve_indir = preserve_indir
         cls.preserve_outdirs = preserve_outdirs
+        cls.toolpath = toolpath
 
     def setUp(self):
         # Enable this to turn on debugging output
@@ -256,6 +259,9 @@ class TestFunctional(unittest.TestCase):
         if images:
             for image in images:
                 args += ['-i', image]
+        if self.toolpath:
+            for path in self.toolpath:
+                args += ['--toolpath', path]
         return self._DoBinman(*args)
 
     def _SetupDtb(self, fname, outfile='u-boot.dtb'):