feat(esp_eth): removed disable of C5 and P4 from examples .build-test-rules

Updated examples to be able to build for C5 and P4.

Added Ethernet support for static_ip example.

examples/ethernet/basic/pytest_eth_basic.py

@@ -12,7 +12,7 @@ from pytest_embedded import Dut
     pytest.param('default_ip101', marks=[pytest.mark.ethernet_router]),
     pytest.param('default_dm9051', marks=[pytest.mark.eth_dm9051]),
 ], indirect=True)
-def test_esp_eth_basic_dm9051(
+def test_esp_eth_basic(
     dut: Dut
 ) -> None:
     # wait for ip received