drm: zynqmp_dp: Rearrange zynqmp_dp for better padding

Sort the members of struct zynqmp_dp to reduce padding necessary for
alignment.

Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240503192922.2172314-3-sean.anderson@linux.dev