staging: vt6655: Rename macro MACvSelectPage0

Rename MACvSelectPage0 macro to VT6655_MAC_SELECT_PAGE0 to avoid
CamelCase which is not accepted by checkpatch.pl and to clean up
namespace. Remove unnecessary line break.

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/a656aa0e04c43654ba22b764cb00e27898efbe5f.1661666677.git.philipp.g.hortmann@gmail.com


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