leds: apu: extend support for PC Engines APU1 with newer firmware

The DMI_PRODUCT_NAME entry on current firmware of PC Engines APU1 changed
from "APU" to "apu1"

This modification adds the missing DMI data and thereby the LED support for
the PC Engines APU1 with firmware versions >= 4.6.8.

Signed-off-by: Andreas Eberlein <[e-mail]>
Tested-by: Zbyněk Kocur <[e-mail]>
Signed-off-by: Pavel Machek <[e-mail]>

drivers/leds/leds-apu.c

···
 };
 
 static const struct dmi_system_id apu_led_dmi_table[] __initconst = {
+	/* PC Engines APU with factory bios "SageBios_PCEngines_APU-45" */
 	{
 		.ident = "apu",
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"),
 			DMI_MATCH(DMI_PRODUCT_NAME, "APU")
+		}
+	},
+	/* PC Engines APU with "Mainline" bios >= 4.6.8 */
+	{
+		.ident = "apu",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "apu1")
 		}
 	},
 	{}
···
 	int err;
 
 	if (!(dmi_match(DMI_SYS_VENDOR, "PC Engines") &&
-	      dmi_match(DMI_PRODUCT_NAME, "APU"))) {
+	      (dmi_match(DMI_PRODUCT_NAME, "APU") || dmi_match(DMI_PRODUCT_NAME, "apu1")))) {
 		pr_err("No PC Engines APUv1 board detected. For APUv2,3 support, enable CONFIG_PCENGINES_APU2\n");
 		return -ENODEV;
 	}