Add the KSPP recommendation of WERROR

kconfig_hardened_check/__init__.py

@@ -388,6 +388,7 @@ def add_kconfig_checks(l, arch):
     l += [KconfigCheck('self_protection', 'kspp', 'INIT_ON_ALLOC_DEFAULT_ON', 'y')]
     l += [KconfigCheck('self_protection', 'kspp', 'GCC_PLUGIN_LATENT_ENTROPY', 'y')]
     l += [KconfigCheck('self_protection', 'kspp', 'KFENCE', 'y')]
+    l += [KconfigCheck('self_protection', 'kspp', 'WERROR', 'y')]
     randstruct_is_set = KconfigCheck('self_protection', 'kspp', 'GCC_PLUGIN_RANDSTRUCT', 'y')
     l += [randstruct_is_set]
     hardened_usercopy_is_set = KconfigCheck('self_protection', 'kspp', 'HARDENED_USERCOPY', 'y')