This will make it easier to change the way logging is done for all
drivers. This also fixes the log category for a couple of drivers as
well as makes failing to set the logger a fatal error. Only when a
logger is already set is it impossible to set another logger.
The current frame allocator limits requests to powers of two, between 4
KiB and 4 MiB. As such, a 8-bit color 1920x1080 framebuffer needs at
least two allocations.
bjorn3