Staging: vt6655: defined byVT3253InitTab_RFMD[] and byVT3253B0_RFMD[] as const arrays.

This patch changes byVT3253InitTab_RFMD[] and byVT3253B0_RFMD[]
arrays in const arrays since these are not changed anywhere in the
code.

Signed-off-by: Claudiu Beznea <claudiu.beznea@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>