[PATCH v2] l1: add CBCH flag to dedicated mode

[Sylvain Munaut]

> Add a .dm_flags member to struct l1ctl_dm_est_req.  Define a flag bit
> to indicate CBCH mode.  If set, this instructs L1 to use the CBCH
> variant of SDCCH for dedicated mode (no uplink, no SACCH).
>
> Add the new dm_flags field to l1ctl_tx_dm_est_req* API calls.  Clear it
> everywhere, except for app_cbch_sniff which requests CBCH.
>
> Signed-off-by: Alex Badea <vamposdecampos at gmail.com>

I've put it in my testing branch to make sure I don't loose it. I want
to think about it a bit more (mostly to see how I could merge other
stuff in mainline by adding other 'flags').

Cheers,

    Sylvain