drm/rockchip: vop2: Remove AFBC from TRANSFORM_OFFSET register macro

This TRANSFORM_OFFSET register needs to be configured not only in
AFBC mode, but also in tile mode, so remove the AFBC/AFBCD prefix.

This also help avoid "exceeds 100 columns" warning from checkpatch.

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20250218112744.34433-3-andyshrk@163.com