Created attachment 451979 [details, diff]
Add USE_EXPAND support for USB_DRIVERS
When bug 480664 was fixed, USE_EXPAND support was not added for the ups_drivers_* USE flags. This makes it annoying to build with a single driver, as most drivers are built by default, and currently the only way to turn them off is to add -ups_drivers_* for each one to package.use.
I know that touching USE_EXPAND requires permission from the -dev list, but I've gone ahead and attached a patch which implements adding UPS_DRIVERS to USE_EXPAND were that to be approved.
Pretty please, with sugar on top, add UPS_DRIVERS to USE_EXPAND.