Makes zl10353 a bit more DVB API compliant:
FE_READ_UNCORRECTED_BLOCKS - keep a counter of UNC blocks
FE_GET_FRONTEND - return last set frequency instead of zero
Signed-off-by: NAleksandr V. Piskunov <alexandr.v.piskunov@gmail.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>