ARM: dts: msm: rename cti cpu node on krypton

Rename single core CTI node label and property names to include
cpu number so that they are consistent with multi core cpu
naming.

Change-Id: I5c583a4b382aaa6b93e168e239f972e407ba772a
Signed-off-by: Pratik Patel <pratikp@codeaurora.org>