[PATCH] doc: remove references to hardirq.c

The patch below removes stale references to kernel/hardirq.c in comments,
remnants of the earlier iterations of the generic irq subsystem code.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/i386/Kconfig

@@ -1195,7 +1195,7 @@ source "crypto/Kconfig"
 source "lib/Kconfig"
 
 #
-# Use the generic interrupt handling code in kernel/hardirq.c:
+# Use the generic interrupt handling code in kernel/irq/:
 #
 config GENERIC_HARDIRQS
 	bool

arch/ppc64/Kconfig

@@ -208,7 +208,7 @@ config PREEMPT
 	  or real-time system.  Say N if you are unsure.
 
 #
-# Use the generic interrupt handling code in kernel/hardirq.c:
+# Use the generic interrupt handling code in kernel/irq/:
 #
 config GENERIC_HARDIRQS
 	bool

arch/x86_64/Kconfig

@@ -330,7 +330,7 @@ config X86_MCE
 endmenu
 
 #
-# Use the generic interrupt handling code in kernel/hardirq.c:
+# Use the generic interrupt handling code in kernel/irq/:
 #
 config GENERIC_HARDIRQS
 	bool

arch/x86_64/kernel/irq.c

@@ -5,7 +5,7 @@
  *
  * This file contains the lowest level x86_64-specific interrupt
  * entry and irq statistics code. All the remaining irq logic is
- * done by the generic kernel/hardirq.c code and in the
+ * done by the generic kernel/irq/ code and in the
  * x86_64-specific irq controller code. (e.g. i8259.c and
  * io_apic.c.)
  */