MIPS: generic: Fix ranchu_of_match[] termination

ranchu_of_match[] has no terminating element to end the search for a
matching compatible string when the first and only element does not
match, so add one now.

Fixes: f2d0b0d ("MIPS: ranchu: Add Ranchu as a new generic-based board")
Signed-off-by: James Hogan <[email protected]>
Reviewed-by: Paul Burton <[email protected]>
Reviewed-by: Matt Redfearn <[email protected]>
Cc: Ralf Baechle <[email protected]>
Cc: Miodrag Dinic <[email protected]>
Cc: Goran Ferenc <[email protected]>
Cc: Aleksandar Markovic <[email protected]>
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/18581/

arch/mips/generic/board-ranchu.c

@@ -84,6 +84,7 @@ static const struct of_device_id ranchu_of_match[] __initconst = {
 	{
 		.compatible = "mti,ranchu",
 	},
+	{}
 };
 
 MIPS_MACHINE(ranchu) = {