edtlib: wrap DTError

Don't let a malformed devicetree escape as a DTError. Wrap it in an
EDTError instead, so callers can just rely on the edtlib APIs as is
generally expected.

Signed-off-by: Martí Bolívar <marti.bolivar@nordicsemi.no>

scripts/dts/python-devicetree/src/devicetree/edtlib.py

@@ -201,7 +201,10 @@ class EDT:
         self.dts_path = dts
         self.bindings_dirs = bindings_dirs
 
+        try:
             self._dt = DT(dts)
+        except DTError as e:
+            raise EDTError(e) from e
         _check_dt(self._dt)
 
         self._init_compat2binding()