ARM: dts: msm: update thermal zone thresholds for SA8155

Update thermal zone thresholds for gpu, cpu isolation, npu and
cdsp thermal zones based on latest recommendation for SA8155.

Disable pop-mem thermal zone for SA8155.

Change-Id: Ia6e0617e4e57dda5e6ce97acd70f229daa7c56da
Signed-off-by: Manaf Meethalavalappu Pallikunhi <manafm@codeaurora.org>