m68k: init_irq_proc depends on CONFIG_PROC_FS

If CONFIG_PROC_FS is not set, I get:

| arch/m68k/kernel/ints.c:433: error: redefinition of 'init_irq_proc'
| include/linux/interrupt.h:438: error: previous definition of 'init_irq_proc' was here

This was introduced by commit 6168a702ab0be181e5e57a0b2d0e7376f7a47f0b
("Declare init_irq_proc before we use it."), which replaced the #ifdef
protection of the init_irq_proc() call by a static inline dummy if
CONFIG_PROC_FS is not set.

Make init_irq_proc() depend on CONFIG_PROC_FS to fix this.

Signed-off-by: Geert Uytterhoeven <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

arch/m68k/kernel/ints.c

···
 	return 0;
 }
 
+#ifdef CONFIG_PROC_FS
 void init_irq_proc(void)
 {
 	/* Insert /proc/irq driver here */
 }
-
+#endif