adds other layouts to rules.mk

keyboards/planck/rules.mk

@@ -67,6 +67,6 @@ API_SYSEX_ENABLE = no
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
 SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
 
-LAYOUTS = ortho_4x12
+LAYOUTS = ortho_4x12 planck_mit planck_grid
 
-DEFAULT_FOLDER = planck/rev4
+DEFAULT_FOLDER = planck/rev4