sdm660-common: rootdir: Run sensors daemon as system user instead of root

Grant capabilities and change file permissions to allow the sensors.qcom
daemon to start up as the system user/group, rather than running as
root.

Fixes: 63775281
Test: monitor logcat after reboot, confirm no file open errors. Run
QSensorTest, confirm all sensors provide sane data. Confirm that
IMU calibration can read + write its saved settings. Run sensors CTS.
Change-Id: Ib80ea21900d6af6cd34c82c4a63f50c7e0ac18ff

rootdir/etc/init.qcom.rc

@@ -419,6 +419,7 @@ on post-fs-data
     # Create /data/time folder for time-services
     mkdir /data/vendor/time/ 0700 system system
 
+
     setprop vold.post_fs_data_done 1
 
     #Create a folder for SRS to be able to create a usercfg file
@@ -630,15 +631,20 @@ service vendor.sensors /vendor/bin/sscrpcd
     disabled
 
 service vendor.sensors.qti /vendor/bin/sensors.qti
-    class core
+    class main
     user system
     group system
+    # Grants the ability for this daemon to bind IPC router ports so it can
+    # register QMI services
+    capabilities NET_BIND_SERVICE
 
 service vendor.sensors.qcom /vendor/bin/sensors.qcom
-    class core
-    user root
-    group root
-    writepid /dev/cpuset/system-background/tasks
+    class main
+    user system
+    group system
+    # Grants the ability for this daemon to bind IPC router ports so it can
+    # register QMI services
+    capabilities NET_BIND_SERVICE
 
 on property:ro.vendor.use_data_netmgrd=false
     # netmgr not supported on specific target

rootdir/etc/ueventd.qcom.rc

@@ -236,7 +236,9 @@ firmware_directories /vendor/firmware_mnt/image/
 /dev/tsc_ci0              0660   media       media
 
 # sensors
-/dev/sensors              0660   system     system
+# /dev/sensors only supports an ioctl to get the current SLPI timestamp
+# allow the sensors daemon to perform this as non-root
+/dev/sensors              0660   root       system
 /sys/devices/i2c-12/12-*  pollrate_ms 0664 system system
 /sys/devices/f9925000.i2c/i2c-0/0-*                 enable         0660    input    system
 /sys/devices/f9925000.i2c/i2c-0/0-*                 poll_delay     0660    input    system
@@ -413,7 +415,6 @@ firmware_directories /vendor/firmware_mnt/image/
 /sys/class/graphics/fb0     dynamic_bitclk           0664    system  graphics
 /sys/devices/virtual/hdcp/msm_hdcp  min_level_change 0664    system  graphics
 
-
 #QG device
 /dev/qg               0660   system     system
 /dev/qg_battery       0660   system     system