staging: vt6655: Rename constant definitions with CamelCase

Rename constant definitions with CamelCase in mac.h as
they are not accepted by checkpatch.pl

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/19cfb3ec78eaba8e839578b1ea5a6eb09e8c09be.1649103348.git.philipp.g.hortmann@gmail.com


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