hwmon: qpnp-adc: Add battery thermistor mapping table

Add mapping table used for converting battery thermistor
voltage to the corresponding temperature based on
the qrd resistive divider circuit.

Change-Id: I5d3a8fd446cc59e30192485f28a9436e5517350f
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>
diff --git a/drivers/hwmon/qpnp-adc-voltage.c b/drivers/hwmon/qpnp-adc-voltage.c
index d78d2ea..edb1d66 100644
--- a/drivers/hwmon/qpnp-adc-voltage.c
+++ b/drivers/hwmon/qpnp-adc-voltage.c
@@ -112,6 +112,7 @@
 	[SCALE_XOTHERM] = {qpnp_adc_tdkntcg_therm},
 	[SCALE_THERM_100K_PULLUP] = {qpnp_adc_scale_therm_pu2},
 	[SCALE_THERM_150K_PULLUP] = {qpnp_adc_scale_therm_pu1},
+	[SCALE_QRD_BATT_THERM] = {qpnp_adc_scale_qrd_batt_therm},
 };
 
 static int32_t qpnp_vadc_read_reg(int16_t reg, u8 *data)