image.mk: add CMDLINE to DEVICE_VARS

Signed-off-by: Felix Fietkau <[email protected]>

include/image.mk

@@ -355,7 +355,7 @@ endef
 
 DEFAULT_DEVICE_VARS := \
   DEVICE_NAME KERNEL KERNEL_INITRAMFS KERNEL_INITRAMFS_IMAGE \
-  DEVICE_DTS DEVICE_DTS_DIR BOARD_NAME \
+  DEVICE_DTS DEVICE_DTS_DIR BOARD_NAME CMDLINE \
   UBOOTENV_IN_UBI KERNEL_IN_UBI \
   BLOCKSIZE PAGESIZE SUBPAGESIZE VID_HDR_OFFSET \
   UBINIZE_OPTS