doc: Fix IRQ chip docs

This patch updates the IRQ docs to match reality.

Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/Documentation/DocBook/genericirq.tmpl b/Documentation/DocBook/genericirq.tmpl
index c671a01..1448b33 100644
--- a/Documentation/DocBook/genericirq.tmpl
+++ b/Documentation/DocBook/genericirq.tmpl
@@ -417,8 +417,8 @@
       </para>
       <para>
 	To make use of the split implementation, replace the call to
-	__do_IRQ by a call to desc->chip->handle_irq() and associate
-        the appropriate handler function to desc->chip->handle_irq().
+	__do_IRQ by a call to desc->handle_irq() and associate
+        the appropriate handler function to desc->handle_irq().
 	In most cases the generic handler implementations should
 	be sufficient.
      </para>