ARM: dts: msm: Update qcom,msm-id format for APQ8084

Update the APQ8084 device tree files to use the split
version of the qcom,msm-id property, and add the proper
qcom,board-id values for the APQ8084 Simulator / CDP
platforms.

Change-Id: Ie98404e6e0ed5ca834d7fe7ac9ee0f1a3c772ce0
Signed-off-by: Stepan Moskovchenko <stepanm@codeaurora.org>