utils: Add round down 128 macro for completeness
utils: Add round down 128 macro for completeness

ensonic/gstreamer,centricular/gstreamer,jpxiong/gstreamer,StreamUtils/gstreamer,ensonic/gstreamer,jpakkane/gstreamer,jpxiong/gstreamer,cablelabs/gstreamer,surround-io/gstreamer,Lachann/gstreamer,centricular/gstreamer,krichter722/gstreamer,jpakkane/gstreamer,cablelabs/gstreamer,krichter722/gstreamer,Lachann/gstreamer,cfoch/gstreamer,ensonic/gstreamer,centricular/gstreamer,jpakkane/gstreamer,StreamUtils/gstreamer,surround-io/gstreamer,cablelabs/gstreamer,StreamUtils/gstreamer,centricular/gstreamer,mparis/gstreamer,StreamUtils/gstreamer,jpxiong/gstreamer,mparis/gstreamer,Lachann/gstreamer,shelsonjava/gstreamer,mparis/gstreamer,StreamUtils/gstreamer,Lachann/gstreamer,jpxiong/gstreamer,Lachann/gstreamer,cfoch/gstreamer,ensonic/gstreamer,cfoch/gstreamer,shelsonjava/gstreamer,krichter722/gstreamer,surround-io/gstreamer,shelsonjava/gstreamer,mparis/gstreamer,surround-io/gstreamer,shelsonjava/gstreamer,ensonic/gstreamer,mparis/gstreamer,surround-io/gstreamer,jpakkane/gstreamer,krichter722/gstreamer,jpakkane/gstreamer,centricular/gstreamer,cfoch/gstreamer,shelsonjava/gstreamer,cfoch/gstreamer,jpxiong/gstreamer,krichter722/gstreamer,cablelabs/gstreamer,cablelabs/gstreamer