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/hikey_defconfig b/configs/hikey_defconfig
index 8dd330a..b112be2 100644
--- a/configs/hikey_defconfig
+++ b/configs/hikey_defconfig
@@ -7,6 +7,7 @@
 # CONFIG_DISPLAY_BOARDINFO is not set
 CONFIG_BOARD_EARLY_INIT_F=y
 # CONFIG_CMD_IMLS is not set
+CONFIG_CMD_UNZIP=y
 CONFIG_CMD_MMC=y
 CONFIG_CMD_USB=y
 CONFIG_CMD_GPIO=y