ARM: dts: msm: Add jtagv8 support for MSM8953

jtagv8 driver can be used to save and restore debug and ETM
registers across power collapse. Add jtag nodes to support
save/restore ETM registers for MSM8953.

CRs-Fixed: 2230899
Change-Id: I1d61450320a8a79a67b0b9e3ec90bfd7a7ae985d
Signed-off-by: Mao Jinlong <jinlmao@codeaurora.org>