[turbofan][verifier] Handle kUnalignedLoad and kUnalignedStore

The machine graph verifier did not handle kUnalignedLoad and
kUnalignedStore yet, which caused problems with debug builds on arm.

R=mvstanton@chromium.org

Bug: v8:11384
Change-Id: I1a33c1e5993f9f0dd453a2d3f757e0eaff65b479
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2756213Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73487}

src/compiler/machine-graph-verifier.cc

@@ -540,6 +540,7 @@ class MachineRepresentationChecker {
             CheckValueInputIsTagged(node, 0);
             break;
           case IrOpcode::kLoad:
+          case IrOpcode::kUnalignedLoad:
           case IrOpcode::kWord32AtomicLoad:
           case IrOpcode::kWord32AtomicPairLoad:
           case IrOpcode::kWord64AtomicLoad:
@@ -559,6 +560,7 @@ class MachineRepresentationChecker {
                                             MachineRepresentation::kWord32);
             V8_FALLTHROUGH;
           case IrOpcode::kStore:
+          case IrOpcode::kUnalignedStore:
           case IrOpcode::kWord32AtomicStore:
           case IrOpcode::kWord32AtomicExchange:
           case IrOpcode::kWord32AtomicAdd: