arm64: dts: qcom: qcs404: Add missing space for cooling-cells property

There should be a space both before and after the equal sign.
Add a missing space for the cooling cells property.

Fixes: f48cee32

 ("arm64: dts: qcom: qcs404: Add thermal zones for each sensor")
Signed-off-by: Niklas Cassel <niklas.cassel@linaro.org>
Acked-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Andy Gross <agross@kernel.org>