I'm by far no Pro at Resolve so take anything I say with a grain of salt.
That being said, did they say which log they expect? You didn't shoot in log so I'm not quite sure why they'd need it. Cinelog maybe? LogC?
I'm confused because, in a color managed workflow, as I would expect from a grading house, it's really trivial to integrate any color space as long as you know which one the footage is in. If they prefer working in Log that's fine, but it's literally two clicks to check the input color space on the footage and it gets transformed into the working color space. So I'm not quite sure if there isn't some misunderstanding between you and the post house.
Anyway, you can do it yourself if you know which color space they expect. Change your Project Settings, Color Management to Davinci YRGB Color Managed and then you change the Output Color Space to whatever. Simplest way to do different Deliveries I'd say.
EDIT: I just now saw, that you already had to deliver the footage
What did you end up doing?
That being said, did they say which log they expect? You didn't shoot in log so I'm not quite sure why they'd need it. Cinelog maybe? LogC?
I'm confused because, in a color managed workflow, as I would expect from a grading house, it's really trivial to integrate any color space as long as you know which one the footage is in. If they prefer working in Log that's fine, but it's literally two clicks to check the input color space on the footage and it gets transformed into the working color space. So I'm not quite sure if there isn't some misunderstanding between you and the post house.
Anyway, you can do it yourself if you know which color space they expect. Change your Project Settings, Color Management to Davinci YRGB Color Managed and then you change the Output Color Space to whatever. Simplest way to do different Deliveries I'd say.
EDIT: I just now saw, that you already had to deliver the footage
What did you end up doing?