Allow system server to access sysfs node of led lights.

To support input device lights manager feature in frameworks, provide
sysfs node access to system server process.

Bug: 161633625
Test: atest LightsManagerTest, atest InputDeviceLightsManagerTest
Change-Id: Ic823539e9dd616b6ca4ae803756746e0f5349ec1
diff --git a/rootdir/ueventd.rc b/rootdir/ueventd.rc
index a1e9b12..3eeda20 100644
--- a/rootdir/ueventd.rc
+++ b/rootdir/ueventd.rc
@@ -76,3 +76,5 @@
 /sys/devices/virtual/usb_composite/*   enable      0664  root   system
 /sys/devices/system/cpu/cpu*   cpufreq/scaling_max_freq   0664  system system
 /sys/devices/system/cpu/cpu*   cpufreq/scaling_min_freq   0664  system system
+/sys/devices/virtual/misc/uhid/*/leds/* brightness   0664  system system
+/sys/devices/virtual/misc/uhid/*/leds/* multi_intensity   0664  system system