Use OBJECT_DECLARE_TYPE when possible

This converts existing DECLARE_OBJ_CHECKERS usage to
OBJECT_DECLARE_TYPE when possible.

 $ ./scripts/codeconverter/converter.py -i \
   --pattern=AddObjectDeclareType $(git grep -l '' -- '*.[ch]')

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Acked-by: Paul Durrant <paul@xen.org>
Message-Id: <20200916182519.415636-5-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
diff --git a/hw/usb/hcd-ehci.h b/hw/usb/hcd-ehci.h
index 1301ce0..199913b 100644
--- a/hw/usb/hcd-ehci.h
+++ b/hw/usb/hcd-ehci.h
@@ -350,10 +350,7 @@
 #define TYPE_PPC4xx_EHCI "ppc4xx-ehci-usb"
 #define TYPE_FUSBH200_EHCI "fusbh200-ehci-usb"
 
-typedef struct EHCISysBusState EHCISysBusState;
-typedef struct SysBusEHCIClass SysBusEHCIClass;
-DECLARE_OBJ_CHECKERS(EHCISysBusState, SysBusEHCIClass,
-                     SYS_BUS_EHCI, TYPE_SYS_BUS_EHCI)
+OBJECT_DECLARE_TYPE(EHCISysBusState, SysBusEHCIClass, SYS_BUS_EHCI)
 
 struct EHCISysBusState {
     /*< private >*/