ARM: dts: msm: fix dt entry for jtag save and restore on msmzirc

Fix device tree entry for JTAG save and restore mechanism on msmzirc
required for saving and restoring debug registers across power collapse.

Change-Id: Iad7f7dc0fb9bc40ea19bfd761a83851c6ae0cca7
Signed-off-by: Sarangdhar Joshi <spjoshi@codeaurora.org>