[PATCH] ia64: fix broken __emul_prefix

his seems to be broken for ia32 on ia64 and possibly other emulation
architectures as well. The problem comes from
fs/namei.c:set_fs_altroot() using path_lookup() instead of a
path_walk() relative to "/" (which is the case for 2.4).

include/asm-ia64/namei.h

@@ -9,7 +9,7 @@
 #include <asm/ptrace.h>
 #include <asm/system.h>
 
-#define EMUL_PREFIX_LINUX_IA32 "emul/ia32-linux/"
+#define EMUL_PREFIX_LINUX_IA32 "/emul/ia32-linux/"
 
 static inline char *
 __emul_prefix (void)