[PATCH v5 1/3] printk: fix name/type/scope of preferred_console var

The variable preferred_console is used only inside register_console() and its semantics is boolean. It is negative when no console has been made preferred. Make it static bool and rename to has_preferred. Renaming was suggested by Peter Hurley Acked-by: Petr Mladek

[PATCH v5 1/3] printk: fix name/type/scope of preferred_console var

The variable preferred_console is used only inside register_console() and its semantics is boolean. It is negative when no console has been made preferred. Make it static bool and rename to has_preferred. Renaming was suggested by Peter Hurley Acked-by: Petr Mladek Reviewed-by: Steven Rostedt