check_compliance.py: Make compatible with pre-DEVICETREE_CONF renaming

fw-nrfconnect-zephyr doesn't have the GENERATED_DTS_BOARD ->
DEVICETREE_CONF renaming yet. Set GENERATED_DTS_BOARD too in the
KconfigCheck test, to make it compatible.

Signed-off-by: Ulf Magnusson <[email protected]>

Author: ulfalizer

scripts/check_compliance.py

@@ -286,6 +286,10 @@ def parse_kconfig(self):
         os.environ['DEVICETREE_CONF'] = "dummy"
         os.environ['DTS_POST_CPP'] = 'dummy'
 
+        # Older name for DEVICETREE_CONF, for compatibility with older Zephyr
+        # versions that don't have the renaming
+        os.environ["GENERATED_DTS_BOARD_CONF"] = "dummy"
+
         # For multi repo support
         self.get_modules(os.path.join(tempfile.gettempdir(), "Kconfig.modules"))