Log Message:
Import rkflashtool-20151023 as sysutils/rkflashtool.

Tools for flashing Rockchip ARM devices.

rkcrc			sign files with CRC and KRNL or PARM header
rkflashtool		read/write flash data and device info via libusb
rkmisc			generate a "misc" partition
rkpad			pad file to 512 byte blocks
rkparameters		generate a "parameters" file
rkparametersblock	generate a "parameters" block
rkunpack		unpack "update.img" files
rnunsign		remove KRNL/PARM header and crc footer