ARM: dts: msm: Update CPUID for msmskunk

MPIDR for msmskunk cores has CPUID moved to bit 8. Update the reg
property of CPU node to match the MPIDR values, the new cpuid for
core 0..7 are 0x0..0x700.

CRs-Fixed: 1055760
Change-Id: I2b981c56d3dca3198de27229162f50c7915f72b0
Signed-off-by: Channagoud Kadabi <ckadabi@codeaurora.org>