ARM: dts: msm: enable cpufreq and devfreq nodes for qcs405

To scale cpu and ddr frequency enable cpufreq and devfreq nodes
for qcs405 target.

Change-Id: Ie426f34e32daa4c981eee8a1b97bd472a9f9583f
Signed-off-by: Santosh Mardi <gsantosh@codeaurora.org>