ipmi: kcs: aspeed: Add AST2600 compatible string

The AST2600 is already described in the bindings, but the driver never
gained a compatible string.
Signed-off-by: Joel Stanley <joel@jms.id.au>
Message-Id: <20220221070351.121905-1-joel@jms.id.au>
Signed-off-by: Corey Minyard <cminyard@mvista.com>

drivers/char/ipmi/kcs_bmc_aspeed.c

@@ -693,6 +693,7 @@ static const struct of_device_id ast_kcs_bmc_match[] = {
 	{ .compatible = "aspeed,ast2500-kcs-bmc", .data = &of_v1_ops },
 	{ .compatible = "aspeed,ast2400-kcs-bmc-v2", .data = &of_v2_ops },
 	{ .compatible = "aspeed,ast2500-kcs-bmc-v2", .data = &of_v2_ops },
+	{ .compatible = "aspeed,ast2600-kcs-bmc", .data = &of_v2_ops },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, ast_kcs_bmc_match);