ci: Make consistence between pytest_*.py and .build-test-rules.yml for esp32c6 (i.e. to pass check_test_scripts_build_test_rules.py)

components/spi_flash/.build-test-rules.yml

@@ -8,7 +8,7 @@ components/spi_flash/test_apps/esp_flash:
 
 components/spi_flash/test_apps/flash_encryption:
   disable_test:
-    - if: IDF_TARGET in ["esp32c2", "esp32s2"]
+    - if: IDF_TARGET in ["esp32c2", "esp32s2", "esp32c6"]
       temporary: true
       reason: No runners # IDF-5634
 

components/spi_flash/test_apps/flash_mmap/pytest_mmap.py

@@ -6,6 +6,7 @@ from pytest_embedded import Dut
 
 
 @pytest.mark.supported_targets
+@pytest.mark.temp_skip_ci(targets=['esp32c6'], reason='c6 support TBD')
 @pytest.mark.generic
 @pytest.mark.parametrize(
     'config',