Assign the following firmware filenames:

sms1xxx-stellar-dvbt-01.fw
sms1xxx-nova-a-dvbt-01.fw
sms1xxx-nova-b-dvbt-01.fw
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>