Add emmc, usb, usb_dev_perf and usb_host_perf test
	modified:   Makefile
	modified:   Test.mk
	new file:   emmc/Makefile
	new file:   emmc/emmc_01.sh
	new file:   emmc/emmc_01.txt
	new file:   emmc/emmc_02.sh
	new file:   emmc/emmc_02.txt
	new file:   emmc/emmc_sanity.sh
	new file:   emmc/emmc_sanity.txt
	modified:   install_packs.sh
	modified:   sdcard/sdcard_02.sh
	new file:   usb/Makefile
	new file:   usb/usb_01.sh
	new file:   usb/usb_01.txt
	new file:   usb/usb_02.sh
	new file:   usb/usb_02.txt
	new file:   usb/usb_sanity.sh
	new file:   usb/usb_sanity.txt
	new file:   usb_dev_perf/Makefile
	new file:   usb_dev_perf/usb_dev_perf_01.sh
	new file:   usb_dev_perf/usb_dev_perf_01.txt
	new file:   usb_dev_perf/usb_dev_perf_sanity.sh
	new file:   usb_dev_perf/usb_dev_perf_sanity.txt
	new file:   usb_host_perf/Makefile
	new file:   usb_host_perf/usb_host_perf_01.sh
	new file:   usb_host_perf/usb_host_perf_01.txt
	new file:   usb_host_perf/usb_host_perf_sanity.sh
	new file:   usb_host_perf/usb_host_perf_sanity.txt