ARM: dts: msm: Move krait clocks clients to use DT clock lookup

Since the krait clock driver has been registered as a clock provider,
move the cpufreq, pm and gcc-debug drivers to use DT clock lookup.

Change-Id: Icc69869bf3acad3f57ba0ac1cdd4b3ca57018f3a
Signed-off-by: Tianyi Gou <tgou@codeaurora.org>