mb/packardbell/ms2290: Get rid of device_t

Change-Id: I42b19d660b681cca8fea7d2f52b43c8daceb5e35
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/26493
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>

src/mainboard/packardbell/ms2290/mainboard.c

@@ -51,7 +51,7 @@ int get_cst_entries(acpi_cstate_t ** entries)
 
 
 
-static void mainboard_enable(device_t dev)
+static void mainboard_enable(struct device *dev)
 {
 	u16 pmbase;