Add Elu for Snippets tokenization

src/plugins/intel_cpu/src/emitters/snippets/aarch64/cpu_generator.cpp

@@ -92,6 +92,7 @@ CPUTargetMachine::CPUTargetMachine(dnnl::impl::cpu::aarch64::cpu_isa_t host_isa)
     // unary
     jitters[ov::op::v0::Abs::get_type_info_static()] = CREATE_CPU_EMITTER(jit_abs_emitter);
     jitters[ov::op::v0::Clamp::get_type_info_static()] = CREATE_CPU_EMITTER(jit_clamp_emitter);
+    jitters[ov::op::v0::Elu::get_type_info_static()] = CREATE_CPU_EMITTER(jit_elu_emitter);
     jitters[ov::op::v0::Exp::get_type_info_static()] = CREATE_CPU_EMITTER(jit_exp_emitter);
     jitters[ov::op::v0::Relu::get_type_info_static()] = CREATE_CPU_EMITTER(jit_relu_emitter);
     jitters[ov::op::v0::Tanh::get_type_info_static()] = CREATE_CPU_EMITTER(jit_tanh_emitter);

src/plugins/intel_cpu/src/transformations/snippets/aarch64/pass/snippets_mark_skipped.cpp

@@ -77,6 +77,7 @@ bool SupportsFusingWithConvolution_Simple(const std::shared_ptr<const Node> &nod
     // Skip them here, when they are supported by Snippets ARM. Ticket: 141170.
     return ov::is_type<ov::op::v0::Abs>(node) ||
            ov::is_type<ov::op::v0::Clamp>(node) ||
+           ov::is_type<ov::op::v0::Elu>(node) ||
            ov::is_type<ov::op::v0::Relu>(node) ||
            ov::is_type<ov::op::v0::Tanh>(node);
 }

src/plugins/intel_cpu/src/transformations/transformation_pipeline.cpp

@@ -949,8 +949,9 @@ void Transformations::MainSnippets(void) {
                 ov::is_type<ov::op::v1::Add>(n) ||
                 ov::is_type<ov::op::v0::Clamp>(n) ||
                 ov::is_type<ov::op::v1::Divide>(n) ||
-                ov::is_type<ov::op::v1::Multiply>(n) ||
+                ov::is_type<ov::op::v0::Elu>(n) ||
                 ov::is_type<ov::op::v0::Exp>(n) ||
+                ov::is_type<ov::op::v1::Multiply>(n) ||
                 ov::is_type<ov::op::v0::Relu>(n) ||
                 ov::is_type<ov::op::v0::Tanh>(n));
 #else

src/plugins/intel_cpu/tests/functional/custom/single_layer_tests/classes/activation.cpp

@@ -237,6 +237,7 @@ const std::map<utils::ActivationTypes, std::vector<std::vector<float>>>& activat
         {Abs,         {{}}},
         {Exp,         {{}}},
         {Clamp,       {{-2.0f, 2.0f}}},
+        {Elu,         {{0.1f}}},
         {Relu,        {{}}},
         {Tanh,        {{}}},
     };