ARM: dts: sirf: add clock, frequence-voltage table for CPU0

prima2 and atlas6 uses cpufreq_cpu0, here we put related clock, operation
points in dtsi.

Signed-off-by: Rongjun Ying <Rongjun.Ying@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>