cmd: unzip: automatically select CONFIG_GZIP

unzip calls gzwrite() which is provided in lib/gunzip.c. Make sure it is
automatically pulled in if the user selects CMD_UNZIP.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Heinrich Schuchardt <xypron.glkp@gmx.de>
1 file changed