dt-bindings: can: microchip,mcp2510: Fix $id path

The "$id" value must match the relative path under bindings/ and is
missing the "net" sub-directory.

Fixes: 09328600 ("dt-bindings: can: convert microchip,mcp251x.txt to yaml")
Signed-off-by: "Rob Herring (Arm)" <robh@kernel.org>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20250507154201.1589542-1-robh@kernel.org


Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>