ARM: dts: msm: Enable prediction for Silver CPUs for SDM845

For SDM845, enabling prediction shows better CPU power performance
on certain usecases. Keeping prediction disabled for Gold CPUs for
power.

Change-Id: Id372b346f6a462e6f13a7bf4b02cfd2ac3fa72e8
Signed-off-by: Mahesh Sivasubramanian <msivasub@codeaurora.org>