We will soon have support for a palette mode,
which can replicate the RGB233 mode if required,
or any custom arrangement of bits per color.
Furthermore, the RGB233 mode did not work correctly
in this state, as we did not implement swapping of
the 32 bit words.
This reverts the following commits:
58de0a5bcc3f44f8fc22b82303f44f
I've decided to provide a separate pointer for a raw buffer in case the
library user comes up with a non-RGB332 use case that avoids byte
rearrangement (and copying should be replaced with pulling from the
user's pointer in this case)