Changes

trau_frame.c cosmetic: fix misleading comment

The 4 static const ubit_t arrays ft_hr_up_bits[5], ft_hr_down_bits[5],
ft_data_hr_up_bits[5] and ft_data_hr_down_bits[5] contain frame type
bit patterns that are defined in GSM 08.61 for half-rate speech and
data channels with 16 kbit/s Abis transport, and are used as such
in the code.  However, the comment next to them stated incorrectly
that these frame type bit patterns are for 8 kbit/s submultiplexing -
fix it.

Change-Id: Ic2f818a7f8bab4e82f239464511ab430906d4680