ARM: dts: msm: add cluster0 to cpu-map for msmgold SoC

Add cluster0 to cpu-map for the msmgold SoC because
mpidr says the all cores belongs to cluster1
but cpu-map says cluster0. So add cluster0 to the cpu-map,
so that all cpus are mapped to proper cluster IDs.

Change-Id: I2b843d809a9d38802974a0ff6fef5162e593e5cd
Signed-off-by: Prasad Sodagudi <psodagud@codeaurora.org>