CLEANUP: mux-quic: remove usage of non-standard ull type

ull is a typedef to unsigned long long. It is only defined in
xprt_quic-t.h. Its usage should be limited over time to reduce xprt_quic
dependency over the whole code. It can be replaced by ullong typedef
from compat.h.

For the moment, ull references have been replaced in qmux_trace module.
They were only used for printf format and has been replaced by the true
variable type.

This change is useful to reduce dependencies on xprt_quic in other
files.

This should be backported up to 2.6.
diff --git a/src/qmux_trace.c b/src/qmux_trace.c
index 6d84b7a..72a8f1b 100644
--- a/src/qmux_trace.c
+++ b/src/qmux_trace.c
@@ -43,13 +43,13 @@
 {
 	switch (frm->type) {
 	case QUIC_FT_MAX_STREAMS_BIDI:
-		chunk_appendf(&trace_buf, " max_streams=%llu",
-		              (ull)frm->max_streams_bidi.max_streams);
+		chunk_appendf(&trace_buf, " max_streams=%lu",
+		              frm->max_streams_bidi.max_streams);
 		break;
 
 	case QUIC_FT_MAX_STREAMS_UNI:
-		chunk_appendf(&trace_buf, " max_streams=%llu",
-		              (ull)frm->max_streams_uni.max_streams);
+		chunk_appendf(&trace_buf, " max_streams=%lu",
+		              frm->max_streams_uni.max_streams);
 		break;
 
 	default:
@@ -76,13 +76,13 @@
 			chunk_appendf(&trace_buf, " qc=%p", qcc->conn->handle.qc);
 
 		if (qcs)
-			chunk_appendf(&trace_buf, " qcs=%p .id=%llu .st=%s",
-			              qcs, (ull)qcs->id,
+			chunk_appendf(&trace_buf, " qcs=%p .id=%lu .st=%s",
+			              qcs, qcs->id,
 			              qcs_st_to_str(qcs->st));
 
 		if (mask & QMUX_EV_QCC_NQCS) {
 			const uint64_t *id = a3;
-			chunk_appendf(&trace_buf, " id=%llu", (ull)*id);
+			chunk_appendf(&trace_buf, " id=%lu", *id);
 		}
 
 		if (mask & QMUX_EV_SEND_FRM)
@@ -90,14 +90,14 @@
 
 		if (mask & QMUX_EV_QCS_XFER_DATA) {
 			const struct qcs_xfer_data_trace_arg *arg = a3;
-			chunk_appendf(&trace_buf, " prep=%llu xfer=%d",
-			              (ull)arg->prep, arg->xfer);
+			chunk_appendf(&trace_buf, " prep=%lu xfer=%d",
+			              arg->prep, arg->xfer);
 		}
 
 		if (mask & QMUX_EV_QCS_BUILD_STRM) {
 			const struct qcs_build_stream_trace_arg *arg = a3;
-			chunk_appendf(&trace_buf, " len=%llu fin=%d offset=%llu",
-			              (ull)arg->len, arg->fin, (ull)arg->offset);
+			chunk_appendf(&trace_buf, " len=%lu fin=%d offset=%lu",
+			              arg->len, arg->fin, arg->offset);
 		}
 	}
 }