hw/ide/ich9: Use AHCIPCIState typedef

QEMU coding style recommend using structure typedefs:
https://www.qemu.org/docs/master/devel/style.html#typedefs

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240208181245.96617-2-philmd@linaro.org>

hw/ide/ich.c

@@ -100,14 +100,14 @@ static void pci_ich9_reset(DeviceState *dev)
 
 static void pci_ich9_ahci_init(Object *obj)
 {
-    struct AHCIPCIState *d = ICH9_AHCI(obj);
+    AHCIPCIState *d = ICH9_AHCI(obj);
 
     ahci_init(&d->ahci, DEVICE(obj));
 }
 
 static void pci_ich9_ahci_realize(PCIDevice *dev, Error **errp)
 {
-    struct AHCIPCIState *d;
+    AHCIPCIState *d;
     int sata_cap_offset;
     uint8_t *sata_cap;
     d = ICH9_AHCI(dev);
@@ -156,7 +156,7 @@ static void pci_ich9_ahci_realize(PCIDevice *dev, Error **errp)
 
 static void pci_ich9_uninit(PCIDevice *dev)
 {
-    struct AHCIPCIState *d;
+    AHCIPCIState *d;
     d = ICH9_AHCI(dev);
 
     msi_uninit(dev);