l1if: fix: s/pcu_rx_rach_ind_pdtch/pcu_rx_rach_ind_ptcch/g

This is not a functional change, just fixing misleading function
name. Access Bursts on PTCCH/U have nothing to do with PDTCH.

Change-Id: I4ab710ba026315301cc6970263967616401a9fc8
diff --git a/src/osmo-bts-sysmo/sysmo_l1_if.c b/src/osmo-bts-sysmo/sysmo_l1_if.c
index 751629c..5e743db 100644
--- a/src/osmo-bts-sysmo/sysmo_l1_if.c
+++ b/src/osmo-bts-sysmo/sysmo_l1_if.c
@@ -243,7 +243,7 @@
 				  qta2ta(ra_ind->measParam.i16BurstTiming), true);
 		break;
 	case GsmL1_Sapi_Ptcch:
-		pcu_rx_rach_ind_pdtch(fl1h->trx_no, ra_ind->u8Tn, ra_ind->u32Fn,
+		pcu_rx_rach_ind_ptcch(fl1h->trx_no, ra_ind->u8Tn, ra_ind->u32Fn,
 				      ra_ind->measParam.i16BurstTiming);
 		break;
 	default: