Rename for rk30, rk31, rk32, rk33 chip binaries.

Naming rule:
[chip]_[module]_[feature]_[version].[postfix]

File name after merge, please refer to:
http://opensource.rock-chips.com/wiki_Boot_option



Change-Id: I28e6d5d10c81cbed005acbdbbb6b8088d8a0cd0d
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>