ARM64: dts: qcom: Fix freq table format for MSM8994

Commit 50de3d2a
(cpufreq: Delete unused CPUBW and cache scaling code from cpufreq driver)
changed formatting of "qcom,cpufreq-table".

Change freq table format for MSM8994 to match the new requirement.

Change-Id: I5a917f2b2a8ff985c91d37075fd93b7f57e9f94c
Signed-off-by: Junjie Wu <junjiew@codeaurora.org>