[PATCH 4/7] drm/pl111: Enable PL110 variant

[Eric Anholt]

Linus Walleij <linus.walleij at linaro.org> writes:

> We detect and enable the use of the PL110 variant, an earlier
> incarnation of PL111. The only real difference is that the
> control and interrupt enable registers have swapped place.
> The Versatile AB and Versatile PB have a variant inbetween
> PL110 and PL111, it is PL110 but they have already swapped the
> two registers so those two need a bit of special handling.
>
> Signed-off-by: Linus Walleij <linus.walleij at linaro.org>

With the other Eric's little const fixes,

Reviewed-by: Eric Anholt <eric at anholt.net>
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