Add FEC rates, S2X params and 64K transmission

From: Daniel Scheller <[email protected]>

Note: This v3 doesn't yet implement anything to allow userspace to detect bits regarding S2X, nor does it implement anything new to report frontend capabilities. At the moment, the main purpose for this is to enable any demod frontend to report the current signal parameters more accurate. Right now this (partially) is for the stv0910 demod, and with additional hardware currently in development in mind which supports more S2X bits. There's quite a lot missing from fe_caps right now which almost all demods autodetect anyway, so let's at least properly report signal stats.

dddvb brings a few additional FEC rates (1/4 and 1/3), 64/128/256APSK modulations and more rolloff factors (DVB-S2X), and 64K transmission mode (DVB-T2). These rather trivial patches bring them to mainline, and puts these missing bits into the stv0910's get_frontend() callback (FEC 1/4 and 1/3 are handled throughout the rest of the demod driver already). In addition (as suggestion from Richard Scobie), the stv0910 driver now reports it's active delivery system.

Changes from v2 to v3:
- API bits squashed into one commit, stv0910 changes squashed into another single commit
- DVB-S2X related bits added to the uAPI docs
- DVB API bumped to v5.12

Changes from v1 to v2:
- DVB-S2X rolloff factors and reporting
- report of the active delivery system in stv0910:get_frontend()

Daniel Scheller (3):
[media] dvb_frontend: add S2X and misc. other enums [media] docs: documentation bits for S2X and the 64K transmission mode [media] dvb-frontends/stv0910: more detailed reporting in
get_frontend()

 Documentation/media/frontend.h.rst.exceptions      |  9 ++++
 .../media/uapi/dvb/fe_property_parameters.rst      | 50 ++++++++++++++--------
 .../dvb/frontend-property-satellite-systems.rst    |  8 ++--
 drivers/media/dvb-core/dvb_frontend.c              |  9 ++++
 drivers/media/dvb-frontends/stv0910.c              | 16 ++++---
 include/uapi/linux/dvb/frontend.h                  | 29 ++++++++++---
 include/uapi/linux/dvb/version.h                   |  2 +-
 7 files changed, 90 insertions(+), 33 deletions(-)

2.16.1