Let's declutter Documentation/driver-api a bit.
Signed-off-by: NJonathan Neuschäfer <j.neuschaefer@gmx.net>
Link: https://lore.kernel.org/r/20191004164059.10397-1-j.neuschaefer@gmx.netSigned-off-by: NLinus Walleij <linus.walleij@linaro.org>