dso_dlfcn.c fix for android-7 (5) target

#ifdef ANDROID5
    typedef struct {
        const char *dli_fname;  /* Pathname of shared object that
                                   contains address */
        void       *dli_fbase;  /* Address at which shared object
                                   is loaded */
        const char *dli_sname;  /* Name of nearest symbol with address
                                   lower than addr */
        void       *dli_saddr;  /* Exact address of symbol named
                               in dli_sname */
    } Dl_info;
    int dladdr(const void *addr, Dl_info *info) { return 0; }
#endif