msm: acpuclock-krait: Only print supported number of frequencies once

The current code prints the number of CPU frequencies supported
once for each possible CPU, even though the number of supported
frequencies is the same for each CPU. Cut down on log noise by
printing this number only once.

For example, print:

  [ 0.412932] acpuclk-8974 qcom,acpuclk.23: CPU Frequencies Supported: 11

...instead of:

  [ 0.426013] acpuclk-8974 qcom,acpuclk.23: CPU0: 11 frequencies supported
  [ 0.426052] acpuclk-8974 qcom,acpuclk.23: CPU1: 11 frequencies supported
  [ 0.426089] acpuclk-8974 qcom,acpuclk.23: CPU2: 11 frequencies supported
  [ 0.426124] acpuclk-8974 qcom,acpuclk.23: CPU3: 11 frequencies supported

Change-Id: Iaf15970e6cfcfaec79c0edf8564cab9141fbc05f
Signed-off-by: Matt Wagantall <mattw@codeaurora.org>