Vic Yang 0fefd25c0c Temperature polling and temporal correction ...

A temperature polling task is added to achieve temporal correction and
also reduce the latency of reading temperature.

Factor out sensor specific part to keep code clean.

Signed-off-by: Vic Yang <victoryang@chromium.org>

BUG=chrome-os-partner:7801
TEST=On link, 'temps' shows all temperature readings.
Cover each sensor with hand and see object temperature rise.
Compilation succeeded on bds/adv/daisy/discovery.

Change-Id: I3c44c8b2e3ab2aa9ce640d3fc25e7fba56534b86

2012-02-18 13:37:53 +08:00

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