More code simplification.

Get rid of platformperipheral, it didn't really serve
a purpose in this life (maybe in a past life when sysmgr
did a lot more).

Don't use the thread manager, it's super overkill, just have
a loop that sleeps for the polling period and runs the fan
control probe.

Change-Id: Ibc96bd8abafa7456b71d190e6fb3633b9f147624
11 files changed