hw/microblaze: Clean up local variable shadowing

Fix:

  hw/microblaze/petalogix_ml605_mmu.c: In function ‘petalogix_ml605_init’:
  hw/microblaze/petalogix_ml605_mmu.c:186:24: warning: declaration of ‘dinfo’ shadows a previous local [-Wshadow=compatible-local]
    186 |             DriveInfo *dinfo = drive_get(IF_MTD, 0, i);
        |                        ^~~~~
  hw/microblaze/petalogix_ml605_mmu.c:78:16: note: shadowed declaration is here
     78 |     DriveInfo *dinfo;
        |                ^~~~~

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20230904161235.84651-14-philmd@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>

hw/microblaze/petalogix_ml605_mmu.c

@@ -183,7 +183,7 @@ petalogix_ml605_init(MachineState *machine)
         spi = (SSIBus *)qdev_get_child_bus(dev, "spi");
 
         for (i = 0; i < NUM_SPI_FLASHES; i++) {
-            DriveInfo *dinfo = drive_get(IF_MTD, 0, i);
+            dinfo = drive_get(IF_MTD, 0, i);
             qemu_irq cs_line;
 
             dev = qdev_new("n25q128");