[PARISC] convert to use CONFIG_64BIT instead of __LP64__

Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
diff --git a/include/asm-parisc/signal.h b/include/asm-parisc/signal.h
index 98a82fa..c203563 100644
--- a/include/asm-parisc/signal.h
+++ b/include/asm-parisc/signal.h
@@ -105,7 +105,7 @@
 struct siginfo;
 
 /* Type of a signal handler.  */
-#ifdef __LP64__
+#ifdef CONFIG_64BIT
 /* function pointers on 64-bit parisc are pointers to little structs and the
  * compiler doesn't support code which changes or tests the address of
  * the function in the little struct.  This is really ugly -PB