arm64/dts: add cheetah tele camera thread priority

Tele camera will sometime hit a timeout due to a very long transaction
processing time. Increase the priority for image sensor to resolve this
issue.

Bug: 326832004
Test: build
Change-Id: Ibdbac634312b6173d55af3359257b668f6a78732
Signed-off-by: Kamal Shafi <kamalshafi@google.com>