Add power stats service for specific device

Bug: 183052760
Test: dumpsys android.hardware.power.stats.IPowerStats/default
Change-Id: I20fa0e1b369f9b5f15e7881eea87ef699176dccc
Merged-In: I20fa0e1b369f9b5f15e7881eea87ef699176dccc
diff --git a/device-slider.mk b/device-slider.mk
index 1f77af9..2e977c4 100644
--- a/device-slider.mk
+++ b/device-slider.mk
@@ -73,3 +73,6 @@
 
 DEVICE_MANIFEST_FILE += \
 	device/google/gs101/nfc/manifest_se_gs101.xml
+
+# PowerStats HAL
+PRODUCT_SOONG_NAMESPACES += device/google/raviole/powerstats/slider