[mlir] Apply is_mlir_conv predicate in standalone MLIr offloading (#2249)

Currently, the is_mlir_conv predicate wasn't being used when
offloading standalone convolutions to MLIR on Navi3x, which caused
failures relating to being unable to construct the MLIR program when a
3D convlolution was passed in.

This commit amends the standalone lowering to use said predicate, as
well as to include quant_convolution and quant_dot into the set of
operations that get a standalone lowering.

src/targets/gpu/fuse_mlir.cpp

@@ -327,12 +327,12 @@ struct find_mlir_standalone_op
 
 struct find_mlir_standalone_convolution_op : find_mlir_standalone_op
 {
-    auto matcher() const { return match::name("convolution"); }
+    auto matcher() const { return is_mlir_conv; }
 };
 
 struct find_mlir_standalone_dot_op : find_mlir_standalone_op
 {
-    auto matcher() const { return match::name("dot"); }
+    auto matcher() const { return match::any_of(match::name("dot"), match::name("quant_dot")); }
 };
 
 /**
@@ -365,7 +365,7 @@ bool is_enabled(std::string_view op_name, context* ctx)
         {
             return true;
         }
-        else if(op_name == "convolution")
+        else if(op_name == "convolution" or op_name == "quant_convolution")
         {
             if(ctx == nullptr)
             {