dt-bindings: display/msm: sm8650: Correct VBIF range in example

dt-bindings: display/msm: sm8650: Correct VBIF range in example

VBIF register range is 0x3000 long, so correct the example.  No
practical impact, except when existing code is being re-used in new
contributions.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Patchwork: https://patchwork.freedesktop.org/patch/716454/
Link: https://lore.kernel.org/r/20260405-dts-qcom-display-regs-v2-3-34f4024c65dc@oss.qualcomm.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>