build/rtl8721csm/download.sh : Support km4_boot_all_tz.bin download
build/rtl8721csm/download.sh : Support km4_boot_all_tz.bin download

When enabling trustzone, km4_boot_all_tz.bin should be downloaded instead of km4_boot_all.bin.

jsdosa/TizenRT,jeongchanKim/TizenRT,Samsung/TizenRT,jeongarmy/TizenRT,jeongchanKim/TizenRT,jeongarmy/TizenRT,an4967/TizenRT,sunghan-chang/TizenRT,jsdosa/TizenRT,jeongchanKim/TizenRT,sunghan-chang/TizenRT,jeongarmy/TizenRT,Samsung/TizenRT,jeongchanKim/TizenRT,jsdosa/TizenRT,junmin-kim/TizenRT,pillip8282/TizenRT,an4967/TizenRT,junmin-kim/TizenRT,junmin-kim/TizenRT,junmin-kim/TizenRT,Samsung/TizenRT,sunghan-chang/TizenRT,jeongarmy/TizenRT,jsdosa/TizenRT,junmin-kim/TizenRT,Samsung/TizenRT,an4967/TizenRT,junmin-kim/TizenRT,pillip8282/TizenRT,an4967/TizenRT,pillip8282/TizenRT,jeongarmy/TizenRT,jeongchanKim/TizenRT,Samsung/TizenRT,sunghan-chang/TizenRT,an4967/TizenRT,jeongchanKim/TizenRT,an4967/TizenRT,sunghan-chang/TizenRT,Samsung/TizenRT,sunghan-chang/TizenRT,jsdosa/TizenRT,an4967/TizenRT,jsdosa/TizenRT,pillip8282/TizenRT,jeongchanKim/TizenRT,pillip8282/TizenRT,jsdosa/TizenRT,pillip8282/TizenRT,sunghan-chang/TizenRT,pillip8282/TizenRT,Samsung/TizenRT,junmin-kim/TizenRT,jeongarmy/TizenRT,jeongarmy/TizenRT