-Add sysfs interface to read PM8921 HK/XOADC and thermistor temperature measurements mapped through MPP's. -Move PM8921 ADC from directory /drivers/mfd to /drivers/hwmon for userspace clients to read ADC through hwmon. CRs-Fixed: 302365 Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org> Conflicts: drivers/mfd/Kconfig