Currently only fbbootlogd and fbcond make use of support for multiple
damage areas and they are not all that performance critical anyway.
Orbital always passes a single damage area per write call. Out of all
graphics drivers we have and are likely to get only vesad could
potentially benefit from fine-grained damage areas. This commit doesn't
significantly impact performance of fbcond.
It is quite likely that the next graphics API won't be the last one and
as such would become a legacy API too. Consistently using version
numbers makes it easier to refer to the exact version you mean.
This unifies the driver interface handling between graphics drivers and
makes it easier to change all graphics drivers in lockstep when adding
new features.
bjorn3