cmd: move CONFIG_CMD_UNZIP and CONFIG_CMD_ZIP to Kconfig

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: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Stefan Roese <sr@denx.de>
Acked-by: Ryan Harkin <ryan.harkin@linaro.org>
Tested-by: Ryan Harkin <ryan.harkin@linaro.org>
diff --git a/configs/brxre1_defconfig b/configs/brxre1_defconfig
index 0b7b082..dfa8712 100644
--- a/configs/brxre1_defconfig
+++ b/configs/brxre1_defconfig
@@ -31,6 +31,7 @@
 # CONFIG_CMD_XIMG is not set
 # CONFIG_CMD_EDITENV is not set
 # CONFIG_CMD_CRC32 is not set
+CONFIG_CMD_UNZIP=y
 # CONFIG_CMD_LOADB is not set
 # CONFIG_CMD_LOADS is not set
 # CONFIG_CMD_FLASH is not set