dm: ram: remove unneeded brcm,bcm63268-mc id

brcm,bcm63268.dtsi uses brcm,bcm6328-mc instead of brcm,bcm63268-mc

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
diff --git a/drivers/ram/bmips_ram.c b/drivers/ram/bmips_ram.c
index 9c0b23b..d0f7cd7 100644
--- a/drivers/ram/bmips_ram.c
+++ b/drivers/ram/bmips_ram.c
@@ -90,11 +90,7 @@
 	}, {
 		.compatible = "brcm,bcm6358-mc",
 		.data = (ulong)&bmips_ram_bcm6358,
-	}, {
-		.compatible = "brcm,bcm63268-mc",
-		.data = (ulong)&bmips_ram_bcm6328,
-	},
-	{ /* sentinel */ }
+	}, { /* sentinel */ }
 };
 
 static int bmips_ram_probe(struct udevice *dev)