drm/msm/dpu: Fix sm8250_mdp register length

The downstream dts lists this value as 0x494, and not
0x45c.

Fixes: af776a3e ("drm/msm/dpu: add SM8250 to hw catalog")
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
Link: https://lore.kernel.org/r/20210628085033.9905-1-robert.foss@linaro.orgSigned-off-by: Rob Clark <robdclark@chromium.org>

drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c

@@ -296,7 +296,7 @@ static const struct dpu_mdp_cfg sc7180_mdp[] = {
 static const struct dpu_mdp_cfg sm8250_mdp[] = {
 	{
 	.name = "top_0", .id = MDP_TOP,
-	.base = 0x0, .len = 0x45C,
+	.base = 0x0, .len = 0x494,
 	.features = 0,
 	.highest_bank_bit = 0x3, /* TODO: 2 for LP_DDR4 */
 	.clk_ctrls[DPU_CLK_CTRL_VIG0] = {