package/ogre: disable csharp

Disable csharp to avoid the following build failure with python since
bump to version 1.12.12 in commit
4e814227caa0a5d190e36cd5174239fe5c627279 and
https://github.com/OGRECave/ogre/commit/3fd839c76a153e614c9e3131ff9959234099e749:

/bin/sh: 1: mcs: not found

Fixes:
 - http://autobuild.buildroot.org/results/5f384dbed8e5241f91072bfffa54ba6b9c509751

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

package/ogre/ogre.mk

@@ -33,6 +33,7 @@ OGRE_CXXFLAGS = $(TARGET_CXXFLAGS) -DGLEW_NO_GLU
 # Disable java and nvidia cg support.
 # Disable imgui overlay to avoid extra download from CMake.
 OGRE_CONF_OPTS = -DOGRE_BUILD_DEPENDENCIES=OFF \
+	-DOGRE_BUILD_COMPONENT_CSHARP=OFF \
 	-DOGRE_BUILD_COMPONENT_JAVA=OFF \
 	-DOGRE_BUILD_PLUGIN_CG=OFF \
 	-DOGRE_BUILD_COMPONENT_OVERLAY_IMGUI=OFF \