utils/genrandconfig: add refpolicy custom git handling

Add a custom case to make sure that a random configuration with an empty
git location for refpolicy doesn't fail. It reverts to
BR2_PACKAGE_REFPOLICY_UPSTREAM_VERSION in that case.

Fixes:
 - http://autobuild.buildroot.org/results/98da07a1f9b88e2e8a028a55c8cf76c6ebc28304

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

utils/genrandconfig

@@ -535,6 +535,13 @@ def fixup_config(sysinfo, configfile):
         if 'BR2_ARCH_HAS_NO_TOOLCHAIN_BUILDROOT=y\n' in configlines:
             return False
 
+   if 'BR2_PACKAGE_REFPOLICY=y\n' in configlines and \
+       'BR2_PACKAGE_REFPOLICY_CUSTOM_GIT=y\n' in configlines and \
+       'BR2_PACKAGE_REFPOLICY_CUSTOM_REPO_URL=""\n' in configlines:
+        configlines.remove('BR2_PACKAGE_REFPOLICY_CUSTOM_GIT=y\n')
+        configlines.append('BR2_PACKAGE_REFPOLICY_UPSTREAM_VERSION=y\n')
+        configlines.remove('BR2_PACKAGE_REFPOLICY_CUSTOM_REPO_URL=""\n')
+
     if 'BR2_PACKAGE_XVISOR=y\n' in configlines and \
        'BR2_PACKAGE_XVISOR_USE_CUSTOM_CONFIG=y\n' in configlines and \
        'BR2_PACKAGE_XVISOR_CUSTOM_CONFIG_FILE=""\n' in configlines: