[PARISC] Switch is_compat_task to use TIF_32BIT

Stop using PER_LINUX32 to designate processes needing
compaterizing. Convert is_compat_task to use TIF_32BIT and
set TIF_32BIT in binfmt_elf32.c

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
diff --git a/include/asm-parisc/processor.h b/include/asm-parisc/processor.h
index 4313618..fd7866d 100644
--- a/include/asm-parisc/processor.h
+++ b/include/asm-parisc/processor.h
@@ -278,7 +278,7 @@
  */
 
 #ifdef __LP64__
-#define USER_WIDE_MODE	(personality(current->personality) == PER_LINUX)
+#define USER_WIDE_MODE	(!test_thread_flag(TIF_32BIT))
 #else
 #define USER_WIDE_MODE	0
 #endif