Enable active power management

The cache-coherency fix seems to allow force-idling the GPU not to hang.

MA-581

Change-Id: I4198cc486948223b1a5240605af0ff249a65f57c
diff --git a/services/system/fuchsia/sysconfig.cc b/services/system/fuchsia/sysconfig.cc
index 312267b..b07a4bb 100644
--- a/services/system/fuchsia/sysconfig.cc
+++ b/services/system/fuchsia/sysconfig.cc
@@ -169,10 +169,8 @@
          * Setup RGX specific timing data
          */
 	sys_info->RGXTimingInfo.ui32CoreClockSpeed = kRgxHwCoreClockSpeed;
-	// TODO(MA-581) - Enable these on the MT8167s. Currently having them enabled
-	// causes a hang after sending the firmware a force-idle command.
-	sys_info->RGXTimingInfo.bEnableActivePM = IMG_FALSE;
-	sys_info->RGXTimingInfo.bEnableRDPowIsland = IMG_FALSE;
+	sys_info->RGXTimingInfo.bEnableActivePM = IMG_TRUE;
+	sys_info->RGXTimingInfo.bEnableRDPowIsland = IMG_TRUE;
 	sys_info->RGXTimingInfo.ui32ActivePMLatencyms = kRgxActivePowerLatencyMs;
 
 	/*