Added "${chip_root}/examples/energy-management-app/energy-management-common/common/include", back into silabs EMA BUILD.gn

Author: jamesharrow

examples/energy-management-app/silabs/BUILD.gn

@@ -116,6 +116,7 @@ if (wifi_soc) {
       "${examples_plat_dir}",
       "${chip_root}/src/lib",
       "${examples_common_plat_dir}",
+      "${chip_root}/examples/energy-management-app/energy-management-common/common/include",
       "${chip_root}/examples/energy-management-app/energy-management-common/device-energy-management/include",
       "${chip_root}/examples/energy-management-app/energy-management-common/energy-evse/include",
       "${chip_root}/examples/energy-management-app/energy-management-common/energy-reporting/include",