[PATCH] parisc: fix ptrace

Make ptrace work again

someone (not naming names) forgot that %cr30 is the *thread* register
not the task register.
Committed-by: James Bottomley <jejb@parisc-linux.org>

arch/parisc/kernel/syscall.S

@@ -185,6 +185,7 @@ linux_gateway_entry:
 
 	/* Are we being ptraced? */
 	mfctl	%cr30, %r1
+	LDREG	TI_TASK(%r1),%r1
 	LDREG	TASK_PTRACE(%r1), %r1
 	bb,<,n	%r1,31,.Ltracesys