aspeed/smc: Replace SysBus IRQs with GPIO lines

It's cleaner and removes the curious '+ 1' required to skip the DMA
IRQ line of the controller.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>

hw/arm/aspeed.c

@@ -306,7 +306,7 @@ void aspeed_board_init_flashes(AspeedSMCState *s, const char *flashtype,
         qdev_realize_and_unref(dev, BUS(s->spi), &error_fatal);
 
         cs_line = qdev_get_gpio_in_named(dev, SSI_GPIO_CS, 0);
-        sysbus_connect_irq(SYS_BUS_DEVICE(s), i + 1, cs_line);
+        qdev_connect_gpio_out_named(DEVICE(s), "cs", i, cs_line);
     }
 }
 

hw/ssi/aspeed_smc.c

@@ -1134,10 +1134,7 @@ static void aspeed_smc_realize(DeviceState *dev, Error **errp)
 
     /* Setup cs_lines for peripherals */
     s->cs_lines = g_new0(qemu_irq, asc->cs_num_max);
-
-    for (i = 0; i < asc->cs_num_max; ++i) {
-        sysbus_init_irq(sbd, &s->cs_lines[i]);
-    }
+    qdev_init_gpio_out_named(DEVICE(s), s->cs_lines, "cs", asc->cs_num_max);
 
     /* The memory region for the controller registers */
     memory_region_init_io(&s->mmio, OBJECT(s), &aspeed_smc_ops, s,