[PATCH] drm/bridge: ps8640: Fix size mismatch warning w/ len

[Stephen Boyd]

Quoting Douglas Anderson (2023-12-18 09:04:54)
> After commit 26195af57798 ("drm/bridge: ps8640: Drop the ability of
> ps8640 to fetch the EDID"), I got an error compiling:
>
>   error: comparison of distinct pointer types
>   ('typeof (len) *' (aka 'unsigned int *') and
>    'typeof (msg->size) *' (aka 'unsigned long *'))
>   [-Werror,-Wcompare-distinct-pointer-types]
>
> Fix it by declaring the `len` as size_t.
>
> Fixes: 26195af57798 ("drm/bridge: ps8640: Drop the ability of ps8640 to fetch the EDID")
> Signed-off-by: Douglas Anderson <dianders at chromium.org>
> ---

Reviewed-by: Stephen Boyd <swboyd at chromium.org>