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/dev/virtio/base.cc

@@ -105,7 +105,7 @@ VirtDescriptor::updateChain()
 void
 VirtDescriptor::dump() const
 {
-    if (!DTRACE(VIO))
+    if (!Debug::VIO)
         return;
 
     DPRINTF(VIO, "Descriptor[%i]: "
@@ -122,7 +122,7 @@ VirtDescriptor::dump() const
 void
 VirtDescriptor::dumpChain() const
 {
-    if (!DTRACE(VIO))
+    if (!Debug::VIO)
         return;
 
     const VirtDescriptor *desc(this);
@@ -314,7 +314,7 @@ VirtQueue::produceDescriptor(VirtDescriptor *desc, uint32_t len)
 void
 VirtQueue::dump() const
 {
-    if (!DTRACE(VIO))
+    if (!Debug::VIO)
         return;
 
     for (const VirtDescriptor &d : descriptors)

src/dev/virtio/fs9p.cc

@@ -194,7 +194,7 @@ void
 VirtIO9PBase::dumpMsg(const P9MsgHeader &header, const uint8_t *data, size_t size)
 {
 #ifndef NDEBUG
-    if (!DTRACE(VIO9P))
+    if (!Debug::VIO9P)
         return;
 
     const P9MsgInfoMap::const_iterator it_msg(p9_msg_info.find(header.type));
@@ -386,7 +386,7 @@ VirtIO9PDiod::startDiod()
 
         // Start diod
         execlp(p.diod.c_str(), p.diod.c_str(),
-               "-d", DTRACE(VIO9P) ? "1" : "0", // show debug output
+               "-d", Debug::VIO9P ? "1" : "0", // show debug output
                "-f", // start in foreground
                "-r", diod_rfd_s.c_str(), // setup read FD
                "-w", diod_wfd_s.c_str(), // setup write FD