Adjust the r8a7790 SoC support code to not configure any non-DT SMP code
in case the DT-based enable-method has been installed already.
Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>