Fix light bug.

Bug: 27381177
Bug: 27383791
Change-Id: I3df4db0c7ab3da34249682e70d4d95627a50d3c7
diff --git a/lights/lights.c b/lights/lights.c
index 3ea4191..098e641 100644
--- a/lights/lights.c
+++ b/lights/lights.c
@@ -33,8 +33,7 @@
 static pthread_once_t g_init = PTHREAD_ONCE_INIT;
 static pthread_mutex_t g_lock = PTHREAD_MUTEX_INITIALIZER;
 
-char const* const LED1_LED_FILE
-        = "/sys/class/leds/leds/brightness";
+char const* const LED1_LED_FILE = "/sys/class/leds/kylin:red:led/brightness";
 
 /**
  * device methods