ARM: zynq: Fix tracing support for SMP

v3.17 was adding tracepoint support which hasn't been
properly resolved by merge
"Merge tag 'v3.17' into master-next"
(sha1: 9c270b33)

Testing sequence:
mount -t debugfs debufs /sys/kernel/debug/
cat /sys/kernel/debug/tracing/printk_formats

Signed-off-by: Daniel Ladd <daniel.m.ladd@navy.mil>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>