Revert "Delete the cuttlefish power HAL."

This reverts commit c6a444c4ce71547c72232eeb78100417548456f8.

We need the legacy HAL because the default implementation in AOSP master
is just a pass-through wrapper around the original implementation.

Bug: 134696936
Change-Id: I0dfd2c8da210758b6dcfab6c4db92426eb1e2bd5
Merged-In: I0dfd2c8da210758b6dcfab6c4db92426eb1e2bd5
diff --git a/shared/device.mk b/shared/device.mk
index 55fa72b..118a964 100644
--- a/shared/device.mk
+++ b/shared/device.mk
@@ -303,6 +303,7 @@
 # Power HAL
 #
 PRODUCT_PACKAGES += \
+    power.cutf \
     android.hardware.power@1.0-impl \
     android.hardware.power@1.0-service