meta-bletchley: power-ctrl: fix host status checking in recovery mode

recovery mode only can be triggered when host status is Off
fix the wrong host power status checking when recovery mode triggered

Tested:

[Host status is On]
root@bletchley:~# power-ctrl sled6 status
On
root@bletchley:~# power-ctrl sled6 recovery
Please turn off host before trigger recovery mode

[Host status is Off]
root@bletchley:~# power-ctrl sled6 status
Off
root@bletchley:~# power-ctrl sled6 recovery
Set host6 Recovery mode
SLED6: pressing power button
Motor go forward to press Power button
Power button switch triggered
SLED6: releasing host power button
Motor reverse to initial position successful

Signed-off-by: Potin Lai <potin.lai@quantatw.com>
Change-Id: I40f57bd52d896d8e27d1ccec2e1c388986d28810
diff --git a/meta-facebook/meta-bletchley/recipes-bletchley/motor-ctrl/files/power-ctrl b/meta-facebook/meta-bletchley/recipes-bletchley/motor-ctrl/files/power-ctrl
index 4b0ec8a..9788d44 100755
--- a/meta-facebook/meta-bletchley/recipes-bletchley/motor-ctrl/files/power-ctrl
+++ b/meta-facebook/meta-bletchley/recipes-bletchley/motor-ctrl/files/power-ctrl
@@ -423,7 +423,7 @@
         exit 1
     fi
 elif [[ "$ACTION" == "recovery" ]]; then
-    if [ "$(get_ac_status "$SLED_NUM")" != "$HOST_AC_OFF" ]; then
+    if [ "$(get_host_status "$SLED_NUM")" != "$HOST_ST_OFF" ]; then
         echo "Please turn off host before trigger recovery mode"
         exit 1
     fi