add saola button pin support, esp32 build with board_test

examples/device/board_test/src/CMakeLists.txt

@@ -0,0 +1,19 @@
+idf_component_register(SRCS "main.c"
+                    INCLUDE_DIRS "."
+                    REQUIRES freertos soc)
+                    
+target_compile_options(${COMPONENT_TARGET} PUBLIC
+  "-DCFG_TUSB_MCU=OPT_MCU_ESP32S2"
+  "-DCFG_TUSB_OS=OPT_OS_FREERTOS"
+)
+
+idf_component_get_property( FREERTOS_ORIG_INCLUDE_PATH freertos ORIG_INCLUDE_PATH)
+target_include_directories(${COMPONENT_TARGET} PUBLIC
+  "${FREERTOS_ORIG_INCLUDE_PATH}"
+  "${TOP}/hw"
+  "${TOP}/src"
+)
+
+target_sources(${COMPONENT_TARGET} PUBLIC
+  "${TOP}/hw/bsp/esp32s2_saola/esp32s2_saola.c"
+)