actuation point adjustment for fc980c and fc660c (#2134)

* add i2c lib submodule

* add actuation point adjustment to fc980c

* add actuation point adjustment to fc660c also.

* use https for i2c submodule

* move to existing i2c lib

* properly remove old submodule

* oops, forgot some files for the fc660c

keyboards/fc660c/fc660c.c

@@ -16,10 +16,18 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 #include "fc660c.h"
 
+#ifdef ACTUATION_DEPTH_ADJUSTMENT
+#include "actuation_point.h"
+#endif
+
 void matrix_init_kb(void) {
 	// put your keyboard start-up code here
 	// runs once when the firmware starts up
 
+#ifdef ACTUATION_DEPTH_ADJUSTMENT
+    adjust_actuation_point(ACTUATION_DEPTH_ADJUSTMENT);
+#endif
+
 	matrix_init_user();
 }