thermal: qpnp-adc: Add snapshot of qpnp-adc-tm driver

This is snapshot of qpnp-adc-tm  driver as of
msm-4.9 'commit 7e65e03259909 (Merge "msm: kgsl:
Deregister gpu address on memdesc_sg_virt failure")'.

Removed support for adc_tm_hc and hkadc_ldo as they
are not used for SPF targets. Removed IADC, VADC APIS,
structs and enums not needed for ADC_TM. VADC functions
required for sake of compilation have been retained,
which will be subsequently replaced with IIO functions
to suit msm-4.19.

Change-Id: If8e4fb03471ec045293659b2404f8be95684f8be
Signed-off-by: Manjunatha Madana <mamanj@codeaurora.org>
Signed-off-by: Archana Sriram <apsrir@codeaurora.org>