fault-inject: export fault injection functions

Export symbols should_fail() and fault_create_debugfs_attr() in order
to let modules utilize the fault injection framework.
Signed-off-by: NPer Forlin <per.forlin@linaro.org>
Acked-by: NAkinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

lib/fault-inject.c

@@ -130,6 +130,7 @@ bool should_fail(struct fault_attr *attr, ssize_t size)
 
 	return true;
 }
+EXPORT_SYMBOL_GPL(should_fail);
 
 #ifdef CONFIG_FAULT_INJECTION_DEBUG_FS
 
@@ -243,5 +244,6 @@ struct dentry *fault_create_debugfs_attr(const char *name,
 
 	return ERR_PTR(-ENOMEM);
 }
+EXPORT_SYMBOL_GPL(fault_create_debugfs_attr);
 
 #endif /* CONFIG_FAULT_INJECTION_DEBUG_FS */