add dts config

hc

2023-12-06 08f87f769b595151be1afeff53e144f543faa614

 kernel/drivers/net/can/rcar/Makefile
..
..
@@ -1,3 +1,4 @@
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+# SPDX-License-Identifier: GPL-2.0
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 #
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 #  Makefile for the Renesas R-Car CAN & CAN FD controller drivers
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 #