Use helpers to obtain task pid in printks (arch code)

One of the easiest things to isolate is the pid printed in kernel log.
There was a patch, that made this for arch-independent code, this one makes
so for arch/xxx files.

It took some time to cross-compile it, but hopefully these are all the
printks in arch code.

Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/powerpc/kernel/process.c

@@ -459,7 +459,7 @@ void show_regs(struct pt_regs * regs)
 		printk("DAR: "REG", DSISR: "REG"\n", regs->dar, regs->dsisr);
 #endif
 	printk("TASK = %p[%d] '%s' THREAD: %p",
-	       current, current->pid, current->comm, task_thread_info(current));
+	       current, task_pid_nr(current), current->comm, task_thread_info(current));
 
 #ifdef CONFIG_SMP
 	printk(" CPU: %d", smp_processor_id());

arch/powerpc/kernel/traps.c

@@ -881,7 +881,7 @@ void nonrecoverable_exception(struct pt_regs *regs)
 void trace_syscall(struct pt_regs *regs)
 {
 	printk("Task: %p(%d), PC: %08lX/%08lX, Syscall: %3ld, Result: %s%ld    %s\n",
-	       current, current->pid, regs->nip, regs->link, regs->gpr[0],
+	       current, task_pid_nr(current), regs->nip, regs->link, regs->gpr[0],
 	       regs->ccr&0x10000000?"Error=":"", regs->gpr[3], print_tainted());
 }