package/openzwave: needs dynamic library

package/openzwave: needs dynamic library

openzwave always builds and installs a dynamic library, so add a
dependency to !BR2_STATIC_LIBS. domoticz is the only package that uses
openzwave and it already depends on !BR2_STATIC_LIBS.

This behavior has not changed from 1.5 to 1.6 even if there is only a
build failure with 1.6.

Fixes:
 - http://autobuild.buildroot.org/results/f6c8c4072b2cd5b6e9aa548f41ab000e152f1add

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>