nx: migrate to perfmgr OSS power HAL

- Exercise greater control over hinting, power profiles, specific
  behavior, etc.
- Better support in the future vs maintaining phs
- Totally nuke nvcpl to remove variables in display handling and
  power profiles

Change-Id: If9076248fcacfdc8165bd814ad78786134997b97

initfiles/init.nx.rc

@@ -21,11 +21,20 @@ import /vendor/etc/init/hw/init.${ro.boot.hardware.sku}.rc
 on init
     setprop ro.surface_flinger.primary_display_orientation ORIENTATION_270
     setprop ro.boot.secureos none
+    setprop vendor.powerhal.config powerhint.${ro.boot.hardware.sku}.json
 
 on fs
     mount_all /vendor/etc/fstab.nx
     swapon_all /vendor/etc/fstab.nx
 
+on post-fs-data
+    chmod 0664 /sys/devices/57000000.gpu/devfreq/57000000.gpu/max_freq
+    chown system system /sys/devices/57000000.gpu/devfreq/57000000.gpu/max_freq
+    chmod 0664 /sys/devices/57000000.gpu/devfreq/57000000.gpu/min_freq
+    chown system system /sys/devices/57000000.gpu/devfreq/57000000.gpu/min_freq
+    chmod 0666 /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
+    chown system system /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
+
 on boot
     write /sys/devices/system/cpu/cpufreq/schedutil/up_rate_limit_us 500
     write /sys/module/input_cfboost/parameters/boost_gpu 460800