explicitly add dcd source file without vendor/family

hw/bsp/frdm_kl25z/board.mk

@@ -16,6 +16,7 @@ MCU_DIR = hw/mcu/nxp/sdk/devices/MKL25Z4
 LD_FILE = $(MCU_DIR)/gcc/MKL25Z128xxx4_flash.ld
 
 SRC_C += \
+	src/portable/nxp/khci/dcd_khci.c \
 	$(MCU_DIR)/system_MKL25Z4.c \
 	$(MCU_DIR)/project_template/clock_config.c \
 	$(MCU_DIR)/drivers/fsl_clock.c \
@@ -31,10 +32,6 @@ INC += \
 
 SRC_S += $(MCU_DIR)/gcc/startup_MKL25Z4.S
 
-# For TinyUSB port source
-VENDOR = nxp
-CHIP_FAMILY = khci
-
 # For freeRTOS port source
 FREERTOS_PORT = ARM_CM0