AMR support

[Aegean Chou]

Hi, all

	The osmocomBB no AMR support yet now (only FR, HR and EFR).

	/* no AMR yet */
	void dsp_load_tch_param(struct gsm_time *next_time,

	if (tch_mode) {
		switch (l1s.tch_mode) {
		case GSM48_CMODE_SPEECH_V1:
			*tch_mode = *tch_f_hn ? TCH_FS_MODE : TCH_HS_MODE;
			break;
		case GSM48_CMODE_SPEECH_EFR:
			*tch_mode = *tch_f_hn ? TCH_EFR_MODE : SIG_ONLY_MODE;
			break;
		default:
			*tch_mode = SIG_ONLY_MODE;
		}
	}

	i checked the product datasheet, the C123 can support AMR from the beginning.
	does anyone can give me some information to patch it?
	BTW, i havn't 30 source, so i can't reference it.

Best regards
Aegean Chou