power: Add POWER_HINT_DISABLE_TOUCH support

Change-Id: I363df278598e3402692424539638f3547c648e26
diff --git a/power/power.c b/power/power.c
index bcc40f6..6168ea0 100644
--- a/power/power.c
+++ b/power/power.c
@@ -453,6 +453,14 @@
             int profile = *((intptr_t *)data);
             set_power_profile(samsung_pwr, profile);
             break;
+        case POWER_HINT_DISABLE_TOUCH:
+            ALOGV("%s: POWER_HINT_DISABLE_TOUCH", __func__);
+            if (data) {
+                sysfs_write(samsung_pwr->touchscreen_power_path, "0");
+            } else {
+                sysfs_write(samsung_pwr->touchscreen_power_path, "1");
+            }
+            break;
         default:
             ALOGW("%s: Unknown power hint: %d", __func__, hint);
             break;