staging: vt6655: Rename `ii` variable

Drop Hungarian notation in the loop counter `ii` in
`RFvWriteWakeProgSyn` function.

Signed-off-by: Karolina Drobnik <karolinadrobnik@gmail.com>
Link: https://lore.kernel.org/r/91591b7ca0aaf05d2de1e5ae9477ae3b8f13427f.1634826774.git.karolinadrobnik@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>