thermal/drivers/mediatek/lvts_thermal: Add coeff for mt8192

In order for lvts_raw_to_temp to function properly on mt8192,
temperature coefficients for mt8192 need to be added.

Fixes: 28873224 ("thermal/drivers/mediatek/lvts_thermal: Add mt8192 support")
Signed-off-by: Hsin-Te Yuan <yuanhsinte@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20240416-lvts_thermal-v2-1-f8a36882cc53@chromium.org