ARM: irqstat: Get rid of duplicated declaration

irq_cpustat_t is exactly the same as the asm-generic one. Define
ack_bad_irq so the generic header does not emit the generic version of it.

Signed-off-by: Thomas Gleixner <[e-mail]>
Reviewed-by: Frederic Weisbecker <[e-mail]>
Reviewed-by: Valentin Schneider <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

arch/arm/include/asm/hardirq.h

···
 #ifndef __ASM_HARDIRQ_H
 #define __ASM_HARDIRQ_H
 
-#include <linux/cache.h>
-#include <linux/threads.h>
 #include <asm/irq.h>
 
-typedef struct {
-	unsigned int __softirq_pending;
-} ____cacheline_aligned irq_cpustat_t;
-
-#include <linux/irq_cpustat.h>	/* Standard mappings for irq_cpustat_t above */
-
 #define __ARCH_IRQ_EXIT_IRQS_DISABLED	1
+#define ack_bad_irq ack_bad_irq
+
+#include <asm-generic/hardirq.h>
 
 #endif /* __ASM_HARDIRQ_H */

arch/arm/include/asm/irq.h

···
 void init_IRQ(void);
 
 #ifdef CONFIG_SMP
+#include <linux/cpumask.h>
+
 extern void arch_trigger_cpumask_backtrace(const cpumask_t *mask,
 					   bool exclude_self);
 #define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace