Enable power stats service

Bug: 227284208
Test: dumpsys android.hardware.power.stats.IPowerStats/default
Change-Id: I7be396f841f470a1ac7185a52b6c8499326fa3ab
Signed-off-by: Darren Hsu <[email protected]>

device-lynx.mk

@@ -84,6 +84,9 @@ PRODUCT_COPY_FILES += \
 PRODUCT_COPY_FILES += \
 	device/google/lynx/powerhint.json:$(TARGET_COPY_OUT_VENDOR)/etc/powerhint.json
 
+# PowerStats HAL
+PRODUCT_SOONG_NAMESPACES += device/google/lynx/powerstats
+
 # Bluetooth HAL and Pixel extension
 include device/google/lynx/bluetooth/qti_default.mk