Remove GENERIC_HARDIRQ config option

After the last architecture switched to generic hard irqs the config
options HAVE_GENERIC_HARDIRQS & GENERIC_HARDIRQS and the related code
for !CONFIG_GENERIC_HARDIRQS can be removed.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

lib/Kconfig.debug

@@ -597,7 +597,7 @@ endmenu # "Memory Debugging"
 
 config DEBUG_SHIRQ
 	bool "Debug shared IRQ handlers"
-	depends on DEBUG_KERNEL && GENERIC_HARDIRQS
+	depends on DEBUG_KERNEL
 	help
 	  Enable this to generate a spurious interrupt as soon as a shared
 	  interrupt handler is registered, and just before one is deregistered.

lib/cpu_rmap.c

@@ -8,9 +8,7 @@
  */
 
 #include <linux/cpu_rmap.h>
-#ifdef CONFIG_GENERIC_HARDIRQS
 #include <linux/interrupt.h>
-#endif
 #include <linux/export.h>
 
 /*
@@ -213,8 +211,6 @@ int cpu_rmap_update(struct cpu_rmap *rmap, u16 index,
 }
 EXPORT_SYMBOL(cpu_rmap_update);
 
-#ifdef CONFIG_GENERIC_HARDIRQS
-
 /* Glue between IRQ affinity notifiers and CPU rmaps */
 
 struct irq_glue {
@@ -309,5 +305,3 @@ int irq_cpu_rmap_add(struct cpu_rmap *rmap, int irq)
 	return rc;
 }
 EXPORT_SYMBOL(irq_cpu_rmap_add);
-
-#endif /* CONFIG_GENERIC_HARDIRQS */