sm8450-common: rootdir: ueventd: Set hidraw node to 0660 system system

This is required for dynamic sensor HAL to access hidraw node, which is
needed to enable Headtracking for Spatial Audio on Halliday.2.0

Change-Id: I525b276e3de0558303727d8f2675367d227834cd

rootdir/etc/ueventd.qcom.rc

@@ -190,7 +190,7 @@ subsystem mem_buf_vm
 /dev/qvr_external_sensor_ioctl      0660  system  system
 /sys/kernel/qvr_external_sensor/fd  0660  system  system
 /dev/bus/usb/*                      0660  root    usb
-/dev/hidraw*                        0660  root    usb
+/dev/hidraw*                        0660  system  system
 
 # wlan
 /dev/wcnss_wlan           0660   system     system