reset: mchp: sparx5: Allow building as a module

This reset controller can be used by the LAN966x PCI device.

The LAN966x PCI device driver can be built as a module and this reset
controller driver has no reason to be a builtin driver in that case.

Signed-off-by: Clément Léger <clement.leger@bootlin.com>
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Steen Hegelund <Steen.Hegelund@microchip.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://lore.kernel.org/r/20241014124636.24221-6-herve.codina@bootlin.com
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

drivers/reset/Kconfig

@@ -146,7 +146,7 @@ config RESET_LPC18XX
 	  This enables the reset controller driver for NXP LPC18xx/43xx SoCs.
 
 config RESET_MCHP_SPARX5
-	bool "Microchip Sparx5 reset driver"
+	tristate "Microchip Sparx5 reset driver"
 	depends on ARCH_SPARX5 || SOC_LAN966 || MCHP_LAN966X_PCI || COMPILE_TEST
 	default y if SPARX5_SWITCH
 	select MFD_SYSCON

drivers/reset/reset-microchip-sparx5.c

@@ -191,6 +191,7 @@ static const struct of_device_id mchp_sparx5_reset_of_match[] = {
 	},
 	{ }
 };
+MODULE_DEVICE_TABLE(of, mchp_sparx5_reset_of_match);
 
 static struct platform_driver mchp_sparx5_reset_driver = {
 	.probe = mchp_sparx5_reset_probe,
@@ -213,3 +214,4 @@ postcore_initcall(mchp_sparx5_reset_init);
 
 MODULE_DESCRIPTION("Microchip Sparx5 switch reset driver");
 MODULE_AUTHOR("Steen Hegelund <steen.hegelund@microchip.com>");
+MODULE_LICENSE("GPL");