[PATCH v2 26/52] m68k: apollo: Add and use "apollo.h"

[Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>]

When building with W=1:

    arch/m68k/apollo/dn_ints.c:43:13: warning: no previous prototype for ‘dn_init_IRQ’ [-Wmissing-prototypes]
       43 | void __init dn_init_IRQ(void)
	  |             ^~~~~~~~~~~

Fix this by introducing a new header file "apollo.h" for holding the
prototypes of functions implemented in arch/m68k/apollo/.

Signed-off-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Acked-by: Arnd Bergmann <arnd@xxxxxxxx>
---
v2:
  - Add Acked-by.
---
 arch/m68k/apollo/apollo.h  | 4 ++++
 arch/m68k/apollo/config.c  | 3 ++-
 arch/m68k/apollo/dn_ints.c | 2 ++
 3 files changed, 8 insertions(+), 1 deletion(-)
 create mode 100644 arch/m68k/apollo/apollo.h

diff --git a/arch/m68k/apollo/apollo.h b/arch/m68k/apollo/apollo.h
new file mode 100644
index 0000000000000000..1fe9d856df30354c
--- /dev/null
+++ b/arch/m68k/apollo/apollo.h
@@ -0,0 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+/* dn_ints.c */
+void dn_init_IRQ(void);
diff --git a/arch/m68k/apollo/config.c b/arch/m68k/apollo/config.c
index 7afefb0191504d4e..e161ecd76035862d 100644
--- a/arch/m68k/apollo/config.c
+++ b/arch/m68k/apollo/config.c
@@ -17,6 +17,8 @@
 #include <asm/machdep.h>
 #include <asm/config.h>
 
+#include "apollo.h"
+
 u_long sio01_physaddr;
 u_long sio23_physaddr;
 u_long rtc_physaddr;
@@ -27,7 +29,6 @@ u_long timer_physaddr;
 u_long apollo_model;
 
 extern void dn_sched_init(void);
-extern void dn_init_IRQ(void);
 extern int dn_dummy_hwclk(int, struct rtc_time *);
 static void dn_dummy_reset(void);
 #ifdef CONFIG_HEARTBEAT
diff --git a/arch/m68k/apollo/dn_ints.c b/arch/m68k/apollo/dn_ints.c
index d97251fe0ab83045..ba96a92f8f18f00a 100644
--- a/arch/m68k/apollo/dn_ints.c
+++ b/arch/m68k/apollo/dn_ints.c
@@ -5,6 +5,8 @@
 #include <asm/traps.h>
 #include <asm/apollohw.h>
 
+#include "apollo.h"
+
 static unsigned int apollo_irq_startup(struct irq_data *data)
 {
 	unsigned int irq = data->irq;
-- 
2.34.1