bm: support br_stats enabled flag

Bug: 315067183
Change-Id: I1c5c58e716e952a5e55493c129c2566c7f115da3
Signed-off-by: samou <samou@google.com>
diff --git a/battery_mitigation/battery_mitigation.cpp b/battery_mitigation/battery_mitigation.cpp
index fb81b20..a4e28b9 100644
--- a/battery_mitigation/battery_mitigation.cpp
+++ b/battery_mitigation/battery_mitigation.cpp
@@ -73,6 +73,7 @@
 };
 
 const struct MitigationConfig::EventThreadConfig eventThreadCfg = {
+    .BrownoutStatsEnablePath = "/sys/devices/virtual/pmic/mitigation/br_stats/enable_br_stats",
     .NumericSysfsStatPaths = {
         {"cpu0_freq", "/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq"},
         {"cpu1_freq", "/sys/devices/system/cpu/cpu1/cpufreq/scaling_cur_freq"},