hw/intc/exynos4210_gic: Use more meaningful name for local variable

There are to SysBusDevice variables in exynos4210_gic_realize()
function: one for the device itself and second for arm_gic device.  Add
a prefix "gic" to the second one so it will be easier to understand the
code.

While at it, put local uninitialized 'i' variable at the end, next to
other uninitialized ones.
Signed-off-by: NKrzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

hw/intc/exynos4210_gic.c

@@ -286,21 +286,21 @@ static void exynos4210_gic_init(Object *obj)
     DeviceState *dev = DEVICE(obj);
     Exynos4210GicState *s = EXYNOS4210_GIC(obj);
     SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
-    uint32_t i;
     const char cpu_prefix[] = "exynos4210-gic-alias_cpu";
     const char dist_prefix[] = "exynos4210-gic-alias_dist";
     char cpu_alias_name[sizeof(cpu_prefix) + 3];
     char dist_alias_name[sizeof(cpu_prefix) + 3];
-    SysBusDevice *busdev;
+    SysBusDevice *gicbusdev;
+    uint32_t i;
 
     s->gic = qdev_create(NULL, "arm_gic");
     qdev_prop_set_uint32(s->gic, "num-cpu", s->num_cpu);
     qdev_prop_set_uint32(s->gic, "num-irq", EXYNOS4210_GIC_NIRQ);
     qdev_init_nofail(s->gic);
-    busdev = SYS_BUS_DEVICE(s->gic);
+    gicbusdev = SYS_BUS_DEVICE(s->gic);
 
     /* Pass through outbound IRQ lines from the GIC */
-    sysbus_pass_irq(sbd, busdev);
+    sysbus_pass_irq(sbd, gicbusdev);
 
     /* Pass through inbound GPIO lines to the GIC */
     qdev_init_gpio_in(dev, exynos4210_gic_set_irq,
@@ -316,7 +316,7 @@ static void exynos4210_gic_init(Object *obj)
         sprintf(cpu_alias_name, "%s%x", cpu_prefix, i);
         memory_region_init_alias(&s->cpu_alias[i], obj,
                                  cpu_alias_name,
-                                 sysbus_mmio_get_region(busdev, 1),
+                                 sysbus_mmio_get_region(gicbusdev, 1),
                                  0,
                                  EXYNOS4210_GIC_CPU_REGION_SIZE);
         memory_region_add_subregion(&s->cpu_container,
@@ -326,7 +326,7 @@ static void exynos4210_gic_init(Object *obj)
         sprintf(dist_alias_name, "%s%x", dist_prefix, i);
         memory_region_init_alias(&s->dist_alias[i], obj,
                                  dist_alias_name,
-                                 sysbus_mmio_get_region(busdev, 0),
+                                 sysbus_mmio_get_region(gicbusdev, 0),
                                  0,
                                  EXYNOS4210_GIC_DIST_REGION_SIZE);
         memory_region_add_subregion(&s->dist_container,