vt: use modern types in do_con_write

Use bools for rescan and inverse. And true/false accordingly.

Use u8 for width instead of uint8_t.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20200615074910.19267-11-jslaby@suse.cz


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>