NPUW: Added possibility to set "NO" to string properties, accepting "YES" (#26762)

### Details:
 - *Added possibility to say "NO" to properties*

### Tickets:
 - *ticket-id*

Co-authored-by: Dmitry Matveev <dmitry.matveev@intel.com>

Author: AsyaPronina

src/plugins/intel_npu/src/al/include/npuw_private_properties.hpp

@@ -173,6 +173,7 @@ static constexpr ov::Property<bool> dyn_quant{"NPUW_DQ"};
  * Identify and merge parallel MatMuls over dimension(s) specified.
  * When set to YES, applies transformation for all dimensions.
  * Works with FOLD enabled only.
+ * Set to NO or pass empty value to disable the option.
  * Default value: 2.
  */
 static constexpr ov::Property<std::string> par_matmul_merge_dims{"NPUW_PMM"};
@@ -274,7 +275,7 @@ static constexpr ov::Property<bool> full{"NPUW_DUMP_FULL"};
  * Type: std::string.
  * Dump the specified subgraph(s) in OpenVINO IR form in the current directory.
  * Possible values: Comma-separated list of subgraph indices or "YES" for all
- * subgraphs, e.g. "0,1" or "YES".
+ * subgraphs, "NO" or just empty value to turn option off. E.g. "0,1" or "YES".
  * Default value: empty.
  */
 static constexpr ov::Property<std::string> subgraphs{"NPUW_DUMP_SUBS"};
@@ -284,7 +285,7 @@ static constexpr ov::Property<std::string> subgraphs{"NPUW_DUMP_SUBS"};
  * Type: std::string.
  * Dump subgraph on disk if a compilation failure happens.
  * Possible values: Comma-separated list of subgraph indices or "YES" for all
- * subgraphs, e.g. "0,1" or "YES".
+ * subgraphs, "NO" or just empty value to turn option off. E.g. "0,1" or "YES".
  * Default value: empty.
  */
 static constexpr ov::Property<std::string> subgraphs_on_fail{"NPUW_DUMP_SUBS_ON_FAIL"};
@@ -294,7 +295,7 @@ static constexpr ov::Property<std::string> subgraphs_on_fail{"NPUW_DUMP_SUBS_ON_
  * Type: std::string.
  * Dump input & output tensors for subgraph(s).
  * Possible values: Comma-separated list of subgraph indices or "YES" for all
- * subgraphs, e.g. "0,1" or "YES".
+ * subgraphs, "NO" or just empty value to turn option off. E.g. "0,1" or "YES".
  * Default value: empty.
  */
 static constexpr ov::Property<std::string> inputs_outputs{"NPUW_DUMP_IO"};

src/plugins/intel_npu/src/plugin/npuw/util.cpp

@@ -23,7 +23,7 @@
 #endif
 
 bool ov::npuw::util::is_set(const std::size_t sub_idx, const std::string& opt) {
-    if (opt.empty()) {
+    if (opt.empty() || opt == "NO") {
         return false;
     }
     if (opt == "YES") {

src/plugins/intel_npu/tests/functional/behavior/npuw/behavior_tests.cpp

@@ -674,3 +674,22 @@ TEST(BehaviorTestsNPUWAccuracy, RepAndNonePartPipesGiveSameResults) {
         EXPECT_TRUE(nrmse(rep_tensor, none_tensor));
     }
 }
+
+TEST_F(BehaviorTestsNPUW, CanSayNoToPMMProperty) {
+    // Create model:
+    model = model_generator.get_model_with_one_op();
+
+    // Set expectation to npu plugin:
+    EXPECT_COMPILE_MODEL(mock_npu, TIMES(1));
+
+    // Register mock npu plugin in OpenVINO:
+    register_mock_plugins_in_ov();
+
+    use_npuw_props.emplace(devices("MockNPU"));
+    use_npuw_props.emplace(partitioning::par_matmul_merge_dims("NO"));
+
+    ov::CompiledModel compiled_model;
+    EXPECT_NO_THROW(compiled_model = core.compile_model(model, "NPU", use_npuw_props));
+    auto prop = compiled_model.get_property(partitioning::par_matmul_merge_dims.name());
+    EXPECT_EQ("NO", prop.as<std::string>());
+}