package/minizip: fix options

Options have been prefixed by MZ_ since version 2.8.3 and
https://github.com/nmoinvaz/minizip/commit/cdedc087e7306fbe2c73d4302920846f5c4a8a11

This will fix a build failure with php due to the compat headers being
enabled

Fixes:
 - http://autobuild.buildroot.org/results/fee97d1879b5ea2d9630b2ae629f12b0e202a50e



Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>