Fix Windows ARM64 build: disable x86 asm in StormLib's libtomcrypt

StormLib's bundled libtomcrypt uses x86 inline assembly (bswapl/movl)
gated by __MINGW32__, which is defined on CLANGARM64 too. Pass
-DLTC_NO_BSWAP to force portable C byte-swap fallback.

include/rendering/m2_renderer.hpp

@@ -478,7 +478,6 @@ private:
     // Helper to allocate descriptor sets
     VkDescriptorSet allocateMaterialSet();
     VkDescriptorSet allocateBoneSet();
-    void preallocateBoneBuffers(M2Instance& instance);
 
     // Helper to destroy model GPU resources
     void destroyModelGPU(M2ModelGPU& model);