libraries: Wire: Compile only CONFIG_I2C enabled

Compiling Wire.cpp only if CONFIG_I2C enabled.

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>

Author: soburi

libraries/Wire/CMakeLists.txt

@@ -3,6 +3,6 @@ zephyr_include_directories(.)
 
 if(NOT DEFINED ARDUINO_BUILD_PATH)
 
-zephyr_sources(Wire.cpp)
+zephyr_sources_ifdef(CONFIG_I2C Wire.cpp)
 
 endif()