[media] xc4000: updated standards table

This patch makes the following changes to the standards table:
  - added 'u16 int_freq' to struct XC_TV_STANDARD (needed for analog TV
    and radio, 0 for DVB-T)
  - added new standard for SECAM-D/K video with PAL-D/K audio
  - the 'int_freq' values are now specified in the table
  - changed VideoMode for NTSC and PAL-B/G standards

Signed-off-by: Istvan Varga <istvan_v@mailbox.hu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>