arch-gcn3: Fixing .fast compilation for gcn3

DPRINTF was altered here:
https://gem5-review.googlesource.com/c/public/gem5/+/44988.
This change results in DPRINTFs always compiling. As such, the
variables decladed within NDEBUG ifdefs, and later used in DPRINTFs,
cause an error when compiling .fast. In this patch the NDEBUG ifdefs
have been removed.

Change-Id: I54992cfe152c84b265e64e1389bf2656c95ba42e
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/45481
Reviewed-by: Matthew Poremba <matthew.poremba@amd.com>
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
Maintainer: Matthew Poremba <matthew.poremba@amd.com>
Maintainer: Matt Sinclair <mattdsinclair@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

src/gpu-compute/gpu_tlb.cc

@@ -960,10 +960,10 @@ namespace X86ISA
 
             Process *p = sender_state->tc->getProcessPtr();
             Addr vaddr = pkt->req->getVaddr();
-    #ifndef NDEBUG
+
             Addr alignedVaddr = p->pTable->pageAlign(vaddr);
             assert(alignedVaddr == virtPageAddr);
-    #endif
+
             const EmulationPageTable::Entry *pte = p->pTable->lookup(vaddr);
             if (!pte && sender_state->tlbMode != BaseTLB::Execute &&
                     p->fixupFault(vaddr)) {
@@ -1164,10 +1164,9 @@ namespace X86ISA
                 Process *p = tc->getProcessPtr();
 
                 Addr vaddr = pkt->req->getVaddr();
-    #ifndef NDEBUG
+
                 Addr alignedVaddr = p->pTable->pageAlign(vaddr);
                 assert(alignedVaddr == virt_page_addr);
-    #endif
 
                 const EmulationPageTable::Entry *pte =
                         p->pTable->lookup(vaddr);