staging: vt6655: Rename wData to reg_value in two macros

Fix name of a variable in two macros that use CamelCase which is not
accepted by checkpatch.pl

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/8f2e9451a24e380c997fcf7c87249f7ed9b66787.1657657918.git.philipp.g.hortmann@gmail.com


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