module: add zephyr integration

Support as a zephyr module.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>

zephyr/CMakeLists.txt

@@ -0,0 +1,18 @@
+# At the moment there is only one supported ESP32 SoC, and it is not
+# supported to omit the esp-dif HAL library, so we don't check for a
+# KConfig option to enable the HAL
+#
+# In the future it might look like this:
+# if(CONFIG_ESP_DIF_LIBRARY)
+# to allow users to disable the HAL
+if(CONFIG_SOC_ESP32)
+  zephyr_include_directories(
+    ../components/esp32/include
+    ../components/soc/esp32/include
+    )
+
+  zephyr_link_libraries(
+    hal
+    -L${CMAKE_CURRENT_SOURCE_DIR}/../components/esp32
+    )
+endif()

zephyr/module.yml

@@ -0,0 +1,2 @@
+build:
+  cmake: zephyr