power: Fix hal_api_version initialization

Test: Compile for bullhead
Change-Id: Ic5b50aa90e3969acea209aea3061f1e39723c53e
Signed-off-by: Ajay Dudani <adudani@google.com>
diff --git a/power/power.c b/power/power.c
index 857c58c..1b283f2 100644
--- a/power/power.c
+++ b/power/power.c
@@ -679,7 +679,7 @@
             /* Common hw_device_t fields */
             dev->common.tag = HARDWARE_MODULE_TAG;
             dev->common.module_api_version = POWER_MODULE_API_VERSION_0_5;
-            dev->common.module_api_version = HARDWARE_HAL_API_VERSION;
+            dev->common.hal_api_version = HARDWARE_HAL_API_VERSION;
 
             dev->init = power_init;
             dev->powerHint = power_hint;