hwc: Change error messages to informative messages in HWC

Few error messages in HWComposer change to as informative
messages.

Change-Id: Iecd2d6c129713363d338ca7aeefbcbc422df893d
diff --git a/libhwcomposer/hwc_uevents.cpp b/libhwcomposer/hwc_uevents.cpp
index 926f425..5cb87f8 100644
--- a/libhwcomposer/hwc_uevents.cpp
+++ b/libhwcomposer/hwc_uevents.cpp
@@ -92,7 +92,7 @@
         while(((iter_str - strUdata) <= len) && (*iter_str)) {
             char* pstr = strstr(iter_str, "PANEL_ALIVE=0");
             if (pstr != NULL) {
-                ALOGE("%s: got change event in fb0 with PANEL_ALIVE=0",
+                ALOGI("%s: got change event in fb0 with PANEL_ALIVE=0",
                                                            __FUNCTION__);
                 ctx->mPanelResetStatus = true;
                 return true;