power: Initialize device power paths

Change-Id: I56481946e2e3f4a80f2d3a7713ce61ed7923666d

power/power.c

@@ -327,6 +327,8 @@ static void samsung_power_init(struct power_module *module)
 
     boostpulse_open(samsung_pwr);
 
+    samsung_pwr->touchscreen_power_path = NULL;
+    samsung_pwr->touchkey_power_path = NULL;
     init_touch_input_power_path(samsung_pwr);
 }