cap_sprout: fixed missing argument for mktbootimg

Signed-off-by: Carlo Dee <carlodee.official@proton.me>

BoardConfig.mk

@@ -60,7 +60,7 @@ BOARD_KERNEL_CMDLINE := androidboot.hardware=qcom androidboot.console=ttyMSM0 an
 BOARD_KERNEL_PAGESIZE := 4096
 BOARD_RAMDISK_OFFSET := 0x01000000
 BOARD_KERNEL_TAGS_OFFSET := 0x00000100
-BOARD_MKBOOTIMG_ARGS += --header_version $(BOARD_BOOTIMG_HEADER_VERSION)
+BOARD_MKBOOTIMG_ARGS += --header_version $(BOARD_BOOT_HEADER_VERSION)
 BOARD_MKBOOTIMG_ARGS += --ramdisk_offset $(BOARD_RAMDISK_OFFSET)
 BOARD_MKBOOTIMG_ARGS += --tags_offset $(BOARD_KERNEL_TAGS_OFFSET)
 BOARD_KERNEL_IMAGE_NAME := Image
@@ -131,4 +131,4 @@ TW_INCLUDE_REPACKTOOLS := true
 TW_NO_FLASH_CURRENT_TWRP := true # For A/B devices that has dedicated recovery, removing that option in Advance.
 
 # Maintainer/Version
-TW_DEVICE_VERSION := Crypton
+TW_DEVICE_VERSION := Crypton