Use OBJECT_DECLARE_SIMPLE_TYPE when possible

This converts existing DECLARE_INSTANCE_CHECKER usage to
OBJECT_DECLARE_SIMPLE_TYPE when possible.

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

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Acked-by: Paul Durrant <paul@xen.org>
Message-Id: <20200916182519.415636-6-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
diff --git a/include/hw/timer/nrf51_timer.h b/include/hw/timer/nrf51_timer.h
index 4261a03..76827c1 100644
--- a/include/hw/timer/nrf51_timer.h
+++ b/include/hw/timer/nrf51_timer.h
@@ -17,9 +17,7 @@
 #include "qemu/timer.h"
 #include "qom/object.h"
 #define TYPE_NRF51_TIMER "nrf51_soc.timer"
-typedef struct NRF51TimerState NRF51TimerState;
-DECLARE_INSTANCE_CHECKER(NRF51TimerState, NRF51_TIMER,
-                         TYPE_NRF51_TIMER)
+OBJECT_DECLARE_SIMPLE_TYPE(NRF51TimerState, NRF51_TIMER)
 
 #define NRF51_TIMER_REG_COUNT 4