thermal: increase polling interval to 750ms, temperature limit to 70

Change-Id: Ic57f39ac5d92ddd2821a2342ad2583601e6fe534
Revert "msm: thermal: merged with intellithermal v2 to control the beast"

This reverts commit 911f409adf1f3c383387eeaeaa99e479b4e5f9b9.
Franco thermal driver

This reverts commit ffb7354b1c78506d94e5a23cfe4e426940abffdb.