ci(system): re-enable build test app for C2 and C6, clean up configs

Since we can use CONFIG_NAME now to specify build rules, we don't need
to have target-specific config files.

tools/test_apps/system/build_test/README.md

@@ -1,8 +1,6 @@
 | Supported Targets | ESP32 | ESP32-C2 | ESP32-C3 | ESP32-C6 | ESP32-H2 | ESP32-S2 | ESP32-S3 |
 | ----------------- | ----- | -------- | -------- | -------- | -------- | -------- | -------- |
 
-Efuse on ESP32-C2 not supported
-
 This project is for testing if the application can be built with a particular sdkconfig setting.
 
 To add new configuration, create one more sdkconfig.ci.NAME file in this directory.

tools/test_apps/system/build_test/sdkconfig.ci.esp32c2_without_rom_impl_components

@@ -1,5 +0,0 @@
-CONFIG_IDF_TARGET="esp32c2"
-CONFIG_HAL_WDT_USE_ROM_IMPL=n
-CONFIG_HAL_SYSTIMER_USE_ROM_IMPL=n
-CONFIG_HEAP_TLSF_USE_ROM_IMPL=n
-CONFIG_SPI_FLASH_ROM_IMPL=n

tools/test_apps/system/build_test/sdkconfig.ci.esp32c6_with_rom_impl_components

@@ -1,5 +0,0 @@
-CONFIG_IDF_TARGET="esp32c6"
-CONFIG_HAL_WDT_USE_ROM_IMPL=y
-CONFIG_HAL_SYSTIMER_USE_ROM_IMPL=y
-CONFIG_HEAP_TLSF_USE_ROM_IMPL=y
-CONFIG_SPI_FLASH_ROM_IMPL=y

tools/test_apps/system/build_test/sdkconfig.ci.esp32c6_without_rom_impl_components

@@ -1,5 +0,0 @@
-CONFIG_IDF_TARGET="esp32c6"
-CONFIG_HAL_WDT_USE_ROM_IMPL=n
-CONFIG_HAL_SYSTIMER_USE_ROM_IMPL=n
-CONFIG_HEAP_TLSF_USE_ROM_IMPL=n
-CONFIG_SPI_FLASH_ROM_IMPL=n

tools/test_apps/system/build_test/sdkconfig.ci.esp32c6_without_rvfplib

@@ -1,2 +0,0 @@
-CONFIG_IDF_TARGET="esp32c6"
-CONFIG_COMPILER_FLOAT_LIB_FROM_GCCLIB=y

tools/test_apps/system/build_test/sdkconfig.ci.esp32h2_with_rom_impl_components

@@ -1,5 +0,0 @@
-CONFIG_IDF_TARGET="esp32h2"
-CONFIG_HAL_WDT_USE_ROM_IMPL=y
-CONFIG_HAL_SYSTIMER_USE_ROM_IMPL=y
-CONFIG_HEAP_TLSF_USE_ROM_IMPL=y
-CONFIG_SPI_FLASH_ROM_IMPL=y

tools/test_apps/system/build_test/sdkconfig.ci.no_rom_impl_components

@@ -1,5 +1,6 @@
-CONFIG_IDF_TARGET="esp32h2"
 CONFIG_HAL_WDT_USE_ROM_IMPL=n
 CONFIG_HAL_SYSTIMER_USE_ROM_IMPL=n
 CONFIG_HEAP_TLSF_USE_ROM_IMPL=n
 CONFIG_SPI_FLASH_ROM_IMPL=n
+
+# update tools/test_apps/.build-test-rules.yml if adding more ROM options above!

tools/test_apps/system/build_test/sdkconfig.ci.rom_impl_components

@@ -1,5 +1,6 @@
-CONFIG_IDF_TARGET="esp32c2"
 CONFIG_HAL_WDT_USE_ROM_IMPL=y
 CONFIG_HAL_SYSTIMER_USE_ROM_IMPL=y
 CONFIG_HEAP_TLSF_USE_ROM_IMPL=y
 CONFIG_SPI_FLASH_ROM_IMPL=y
+
+# update tools/test_apps/.build-test-rules.yml if adding more ROM options above!

tools/test_apps/system/build_test/sdkconfig.ci.usb_console_ets_printf

@@ -1,3 +1,2 @@
-CONFIG_IDF_TARGET="esp32s3"
 CONFIG_ESP_CONSOLE_USB_CDC=y
 CONFIG_ESP_CONSOLE_USB_CDC_SUPPORT_ETS_PRINTF=y

tools/test_apps/system/build_test/sdkconfig.ci.usb_serial_jtag

@@ -1,2 +1 @@
-CONFIG_IDF_TARGET="esp32c3"
 CONFIG_ESP_CONSOLE_USB_SERIAL_JTAG=y