powerstats: Refine PowerStats HAL 2.0 documentation

Bug: 169864180
Test: m
Change-Id: I988ff3508fdb09803a0ffdafc9d40cac3b72e075
diff --git a/powerstats/aidl/default/PowerStats.cpp b/powerstats/aidl/default/PowerStats.cpp
index 9f3e76e..d1c97db 100644
--- a/powerstats/aidl/default/PowerStats.cpp
+++ b/powerstats/aidl/default/PowerStats.cpp
@@ -28,9 +28,8 @@
     return ndk::ScopedAStatus::ok();
 }
 
-ndk::ScopedAStatus PowerStats::getPowerEntityStateResidency(
-        const std::vector<int32_t>& in_powerEntityIds,
-        std::vector<StateResidencyResult>* _aidl_return) {
+ndk::ScopedAStatus PowerStats::getStateResidency(const std::vector<int32_t>& in_powerEntityIds,
+                                                 std::vector<StateResidencyResult>* _aidl_return) {
     (void)in_powerEntityIds;
     (void)_aidl_return;
     return ndk::ScopedAStatus::ok();