drm/bridge: parade-ps8640: Reorg the macros

Reorg the macros as follows:
(1) Group the registers on the same page together.
(2) Group the register and its bit operation together while indenting
the macros of the bit operation with one space.

Also fix a misnomer for the number of mipi data lanes.

Signed-off-by: Philip Chen <philipchen@chromium.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210824181140.v2.1.I8ead7431357409f2526e5739ec5bc3ddfd242243@changeid