cpuidle: lpm-workarounds: Add module lpm-workarounds

Add new module lpm-workarounds to support workarounds for
low power modes driver. Add workaround support for unvote
CX turbo vote during exit of rpm assisted power collapse.
On some targets rpm bumps up the CX to turbo while
coming out of power collapse, to reduce the power impact
of this the workaround is necessary.

Change-Id: I11b6e96f02dd3a0dec189ee568a1f7baa3e8894a
Signed-off-by: Srinivas Rao L <lsrao@codeaurora.org>