arm64: dts: qcom: sm8250-xiaomi-elish-boe: fix panel compatible

The bindings expect "novatek,nt36523" fallback in the panel compatible:

  sm8250-xiaomi-elish-boe.dtb: panel@0: compatible: ['xiaomi,elish-boe-nt36523'] is too shor

Fixes: 51c4c2bd ("arm64: dts: qcom: sm8250-xiaomi-elish-boe: Add mdss and dsi panel")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230408130809.52319-1-krzysztof.kozlowski@linaro.org