hw: Declare various const data as 'const'

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250210133134.90879-7-philmd@linaro.org>

hw/isa/vt82c686.c

@@ -224,7 +224,7 @@ static void via_pm_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
-    ViaPMInitInfo *info = data;
+    const ViaPMInitInfo *info = data;
 
     k->realize = via_pm_realize;
     k->config_write = pm_write_config;

hw/rtc/m48t59-isa.c

@@ -129,7 +129,7 @@ static void m48txx_isa_class_init(ObjectClass *klass, void *data)
 static void m48txx_isa_concrete_class_init(ObjectClass *klass, void *data)
 {
     M48txxISADeviceClass *u = M48TXX_ISA_CLASS(klass);
-    M48txxInfo *info = data;
+    const M48txxInfo *info = data;
 
     u->info = *info;
 }

hw/rtc/m48t59.c

@@ -639,7 +639,7 @@ static void m48txx_sysbus_class_init(ObjectClass *klass, void *data)
 static void m48txx_sysbus_concrete_class_init(ObjectClass *klass, void *data)
 {
     M48txxSysBusDeviceClass *u = M48TXX_SYS_BUS_CLASS(klass);
-    M48txxInfo *info = data;
+    const M48txxInfo *info = data;
 
     u->info = *info;
 }

hw/sensor/tmp421.c

@@ -68,7 +68,7 @@ struct TMP421State {
 
 struct TMP421Class {
     I2CSlaveClass parent_class;
-    DeviceInfo *dev;
+    const DeviceInfo *dev;
 };
 
 #define TYPE_TMP421 "tmp421-generic"

hw/usb/hcd-ehci-pci.c

@@ -182,7 +182,7 @@ static void ehci_data_class_init(ObjectClass *klass, void *data)
 {
     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
     DeviceClass *dc = DEVICE_CLASS(klass);
-    EHCIPCIInfo *i = data;
+    const EHCIPCIInfo *i = data;
 
     k->vendor_id = i->vendor_id;
     k->device_id = i->device_id;

hw/usb/hcd-uhci.c

@@ -1289,7 +1289,7 @@ void uhci_data_class_init(ObjectClass *klass, void *data)
     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
     DeviceClass *dc = DEVICE_CLASS(klass);
     UHCIPCIDeviceClass *u = UHCI_CLASS(klass);
-    UHCIInfo *info = data;
+    const UHCIInfo *info = data;
 
     k->realize = info->realize ? info->realize : usb_uhci_common_realize;
     k->exit = info->unplug ? usb_uhci_exit : NULL;