Well I reached out to Seleuco that is on the MAME4Droid Contact. Reply was the following about possibly doing a HBMAME Port to Android
No plans to port it. Sorry. A lot work now. I don't have free time.
Later unibios is not supported on current mame code base (0.139).
Maybe when/if I port some recent code."
So basically, unless RetroArch Ports it, or anyone else, looks like those who have Rom Hacks will have to wait or use HBMAME on any Windows Portable Device like when the GPD Win comes out later on this Year. But it would be amazing to see it on Android Devices like the Shield Portable or any other Device that comes attached to a Controller
HP HPE h8-1360t
GeForce GTX 670 2GB