dt-bindings: hwmon: ti,tmp401: Drop 'items' from 'ti,n-factor' property

dt-bindings: hwmon: ti,tmp401: Drop 'items' from 'ti,n-factor' property

'ti,n-factor' is a scalar type, so 'items' should not be used as that is
for arrays/matrix.

A pending meta-schema change will catch future cases.

Fixes: bd90c5b93950 ("dt-bindings: hwmon: Add TMP401, TMP411 and TMP43x")
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220606212223.1360395-1-robh@kernel.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>