feat(blink): add sdkconfig defaults for each target

based on devkit board design

examples/get-started/blink/pytest_blink.py

@@ -1,6 +1,5 @@
 # SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
 # SPDX-License-Identifier: CC0-1.0
-
 import logging
 import os
 
@@ -8,7 +7,6 @@ import pytest
 from pytest_embedded_idf.dut import IdfDut
 
 
-@pytest.mark.temp_skip_ci(targets=['esp32p4'], reason='esp32p4 support TBD')  # TODO: IDF-8988
 @pytest.mark.supported_targets
 @pytest.mark.generic
 def test_blink(dut: IdfDut) -> None: