thermal: read thermistor temp from sysfs

- avoid wrong sensor value reading for thermalHAL

Bug: 327327502
Test: Build to boot to home
Flag: EXEMPT (bug 337358613)
Change-Id: Id1e70c4afe4b4637e0208b142540ae0117bb6d2f
Signed-off-by: Peter (YM) <[email protected]>

thermal_info_config_charge_lynx.json

@@ -9,20 +9,17 @@
         {
             "Name":"neutral_therm",
             "Type":"UNKNOWN",
-            "TempPath":"/dev/thermal/tz-by-name/neutral_therm/tz_temp",
             "Multiplier":0.001
         },
         {
             "Name":"gnss_tcxo_therm",
             "Type":"UNKNOWN",
-            "TempPath":"/dev/thermal/tz-by-name/gnss_tcxo_therm/tz_temp",
             "Multiplier":0.001
         },
         {
             "Name":"usb_pwr_therm",
             "Type":"UNKNOWN",
             "HotThreshold":["NAN", 40.0, "NAN", "NAN", "NAN", "NAN", "NAN"],
-            "TempPath":"/dev/thermal/tz-by-name/usb_pwr_therm/tz_temp",
             "Multiplier":0.001,
             "PollingDelay":60000,
             "PassiveDelay":7000
@@ -30,7 +27,6 @@
         {
             "Name":"usb_pwr_therm2",
             "Type":"UNKNOWN",
-            "TempPath":"/dev/thermal/tz-by-name/usb_pwr_therm2/tz_temp",
             "Multiplier":0.001
         },
         {
@@ -38,7 +34,6 @@
             "Type":"UNKNOWN",
             "HotThreshold":["NAN", 29.9, "NAN", "NAN", "NAN", "NAN", "NAN"],
             "HotHysteresis":[0.0, 0.9, 0.0, 0.0, 0.0, 0.0, 0.0],
-            "TempPath":"/dev/thermal/tz-by-name/skin_therm1/tz_temp",
             "Multiplier":0.001,
             "PollingDelay":60000,
             "PassiveDelay":7000
@@ -46,19 +41,16 @@
         {
             "Name":"skin_therm2",
             "Type":"UNKNOWN",
-            "TempPath":"/dev/thermal/tz-by-name/skin_therm2/tz_temp",
             "Multiplier":0.001
         },
         {
             "Name":"disp_therm",
             "Type":"UNKNOWN",
-            "TempPath":"/dev/thermal/tz-by-name/disp_therm/tz_temp",
             "Multiplier":0.001
         },
         {
             "Name":"quiet_therm",
             "Type":"UNKNOWN",
-            "TempPath":"/dev/thermal/tz-by-name/quiet_therm/tz_temp",
             "Multiplier":0.001
         },
         {

thermal_info_config_lynx.json

@@ -9,20 +9,17 @@
         {
             "Name":"neutral_therm",
             "Type":"UNKNOWN",
-            "TempPath":"/dev/thermal/tz-by-name/neutral_therm/tz_temp",
             "Multiplier":0.001
         },
         {
             "Name":"gnss_tcxo_therm",
             "Type":"UNKNOWN",
-            "TempPath":"/dev/thermal/tz-by-name/gnss_tcxo_therm/tz_temp",
             "Multiplier":0.001
         },
         {
             "Name":"usb_pwr_therm",
             "Type":"UNKNOWN",
             "HotThreshold":["NAN", 40.0, "NAN", "NAN", "NAN", "NAN", "NAN"],
-            "TempPath":"/dev/thermal/tz-by-name/usb_pwr_therm/tz_temp",
             "Multiplier":0.001,
             "PollingDelay":60000,
             "PassiveDelay":7000
@@ -30,7 +27,6 @@
         {
             "Name":"usb_pwr_therm2",
             "Type":"UNKNOWN",
-            "TempPath":"/dev/thermal/tz-by-name/usb_pwr_therm2/tz_temp",
             "Multiplier":0.001
         },
         {
@@ -38,7 +34,6 @@
             "Type":"UNKNOWN",
             "HotThreshold":["NAN", 27.9, "NAN", "NAN", "NAN", "NAN", "NAN"],
             "HotHysteresis":[0.0, 0.9, 0.0, 0.0, 0.0, 0.0, 0.0],
-            "TempPath":"/dev/thermal/tz-by-name/skin_therm1/tz_temp",
             "Multiplier":0.001,
             "PollingDelay":60000,
             "PassiveDelay":7000
@@ -46,19 +41,16 @@
         {
             "Name":"skin_therm2",
             "Type":"UNKNOWN",
-            "TempPath":"/dev/thermal/tz-by-name/skin_therm2/tz_temp",
             "Multiplier":0.001
         },
         {
             "Name":"disp_therm",
             "Type":"UNKNOWN",
-            "TempPath":"/dev/thermal/tz-by-name/disp_therm/tz_temp",
             "Multiplier":0.001
         },
         {
             "Name":"quiet_therm",
             "Type":"UNKNOWN",
-            "TempPath":"/dev/thermal/tz-by-name/quiet_therm/tz_temp",
             "Multiplier":0.001
         },
         {