First all, I believe that VTune Analyzer 7.2 supports MVLCEE3.0 and I don't think that you have to rebuild vtlxsc and rmtsvr. One thing may be missed of doingfrom you side after insmod vtune_drv.o - that is, you have to do mknodfor character device as below:
# mknod /dev/vtune_d c 252 0
# mknod /dev/vtune_m c 252 1
Also please note that prebuilt utilities in VTune is for PXA27x and you are working on PXA255.
You can use http://premier.intel.com to submit any issue, if you have concerns on this.