msm: limits: Add support to disable ODCM sensors

Add support to disable ODCM sensors when the rail
current goes below a threshold. ODCM will be enabled
back when the current goes above the same threshold.

This threshold is configurable via a device tree
property.

CRs-Fixed: 913701
Change-Id: I566033d966a2212b2782c584df12ed037f7ca7ac
Signed-off-by: Ram Chandrasekar <rkumbako@codeaurora.org>