task_profiles.json: Fix uclamp attribute

task_profiles.json currently uses attributes of a defunct version of
uclamp, which was used for testing.

Let's use the attributes that actually got merged upstream instead.

Bug: 143710295
Change-Id: Ic6a14f52e14efeefc91f6e6bf580c15e2eded82e
Signed-off-by: Quentin Perret <qperret@google.com>