Adjust the r8a7791 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: NMagnus Damm <damm+renesas@opensource.se>
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>