CONFIG_CMD_ZIP is not defined by any board.  I am moving
CONFIG_CMD_UNZIP to defconfig files except UniPhier SoC family.

I am the maintainer of UniPhier platform, so I know "select CMD_UNZIP"
is better for this platform.
Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: NMichal Simek <michal.simek@xilinx.com>
Acked-by: NStefan Roese <sr@denx.de>
Acked-by: NRyan Harkin <ryan.harkin@linaro.org>
Tested-by: NRyan Harkin <ryan.harkin@linaro.org>