The thermal device is supposed to be always enabled.  As the default
value of the status property is "okay", there is no need to make this
explicit in SoC-specific .dtsi files where no override is involved.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>