Fixes #1361

Marlin/Makefile

 VPATH = .
 VPATH += $(BUILD_DIR)
 VPATH += $(HARDWARE_SRC)
-ifeq ($(HARDWARE_VARIANT), arduino)
+ifeq ($(HARDWARE_VARIANT), $(filter $(HARDWARE_VARIANT),arduino Teensy))
 VPATH += $(ARDUINO_INSTALL_DIR)/libraries/LiquidCrystal
 VPATH += $(ARDUINO_INSTALL_DIR)/libraries/SPI
 ifeq ($(LIQUID_TWI2), 1)