potter: set double tap to wake node

Change-Id: Ib8f3bf7497deb3730b28e9805713bac68646981d

BoardConfig.mk

@@ -88,6 +88,7 @@ BOARD_NO_CHARGER_LED := true
 
 # CMHW
 BOARD_USES_CYANOGEN_HARDWARE := true
+TARGET_TAP_TO_WAKE_NODE := "/sys/android_touch/doubletap2wake"
 BOARD_HARDWARE_CLASS += $(DEVICE_PATH)/cmhw
 
 # Crypto

rootdir/etc/init.qcom.rc

@@ -202,6 +202,10 @@ on boot
     chown system system /sys/homebutton/key_left
     chown system system /sys/homebutton/key_right
 
+    # Wake Gestures
+    chown system radio /sys/android_touch/doubletap2wake
+    chmod 0660 /sys/android_touch/doubletap2wake
+
     # Display
     chown system graphics /sys/class/graphics/fb1/hpd
     chmod 0664 /sys/class/graphics/fb1/hpd