misc: Collapse all uses of DTRACE(x) to Debug::x.

Also mark the DTRACE macro as deprecated.

Change-Id: I99d9a9544b539117b375186e3e425d73d3c5cab7
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/45009
Tested-by: kokoro <noreply+kokoro@google.com>
Maintainer: Gabe Black <gabe.black@gmail.com>
Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>

src/mem/external_slave.cc

@@ -96,7 +96,7 @@ class StubSlavePortHandler : public
 Tick
 StubSlavePort::recvAtomic(PacketPtr packet)
 {
-    if (DTRACE(ExternalPort)) {
+    if (Debug::ExternalPort) {
         M5_VAR_USED unsigned int size = packet->getSize();
 
         DPRINTF(ExternalPort, "StubSlavePort: recvAtomic a: 0x%x size: %d"

src/mem/qos/mem_sink.cc

@@ -222,7 +222,7 @@ MemSinkCtrl::processNextReqEvent()
             "%s DUMPING %s queues status\n", __func__,
             (busState == WRITE ? "WRITE" : "READ"));
 
-    if (DTRACE(QOS)) {
+    if (Debug::QOS) {
         for (uint8_t i = 0; i < numPriorities(); ++i) {
             std::string plist = "";
             for (auto& e : (busState == WRITE ? writeQueue[i]: readQueue[i])) {