[PARISC] fix "reduce size of task_struct on 64-bit machines" fallout

Amazingly, parisc was the only arch effected by this...
Convert register-sized loads/stores to always be 32-bit for these fields.

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
diff --git a/arch/parisc/kernel/syscall.S b/arch/parisc/kernel/syscall.S
index 4603032..91b2a48 100644
--- a/arch/parisc/kernel/syscall.S
+++ b/arch/parisc/kernel/syscall.S
@@ -181,7 +181,7 @@
 	/* Are we being ptraced? */
 	mfctl	%cr30, %r1
 	LDREG	TI_TASK(%r1),%r1
-	LDREG	TASK_PTRACE(%r1), %r1
+	ldw	TASK_PTRACE(%r1), %r1
 	bb,<,n	%r1,31,.Ltracesys
 	
 	/* Note!  We cannot use the syscall table that is mapped