mc146818rtc: Move RTC_ISA_IRQ definition

The ISA default number for the RTC devices is not related to its
registers neither. Move this definition to "hw/timer/mc146818rtc.h".

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20191018133547.10936-3-philmd@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

include/hw/timer/mc146818rtc.h

@@ -39,6 +39,8 @@ typedef struct RTCState {
     QLIST_ENTRY(RTCState) link;
 } RTCState;
 
+#define RTC_ISA_IRQ 8
+
 ISADevice *mc146818_rtc_init(ISABus *bus, int base_year,
                              qemu_irq intercept_irq);
 void rtc_set_memory(ISADevice *dev, int addr, int val);

include/hw/timer/mc146818rtc_regs.h

@@ -27,8 +27,6 @@
 
 #include "qemu/timer.h"
 
-#define RTC_ISA_IRQ 8
-
 #define RTC_SECONDS             0
 #define RTC_SECONDS_ALARM       1
 #define RTC_MINUTES             2

tests/rtc-test.c

@@ -15,6 +15,7 @@
 
 #include "libqtest-single.h"
 #include "qemu/timer.h"
+#include "hw/timer/mc146818rtc.h"
 #include "hw/timer/mc146818rtc_regs.h"
 
 #define UIP_HOLD_LENGTH           (8 * NANOSECONDS_PER_SECOND / 32768)