hwc: Do not create copybit.

Do not create copybit instance.
Fix copybit init and deinit sequence.

Change-Id: Ia669f4cc89c85294a040400a750aa72a93e579b8
diff --git a/libhwcomposer/hwc_copybit.cpp b/libhwcomposer/hwc_copybit.cpp
index 05b9997..1249e84 100644
--- a/libhwcomposer/hwc_copybit.cpp
+++ b/libhwcomposer/hwc_copybit.cpp
@@ -510,16 +510,17 @@
     hw_module_t const *module;
     if (hw_get_module(COPYBIT_HARDWARE_MODULE_ID, &module) == 0) {
         copybit_open(module, &sEngine);
+        CopyBit::openEglLibAndGethandle();
     } else {
        ALOGE("FATAL ERROR: copybit open failed.");
     }
-    CopyBit::openEglLibAndGethandle();
 }
+
 CopybitEngine::~CopybitEngine()
 {
-    CopyBit::closeEglLib();
     if(sEngine)
     {
+        CopyBit::closeEglLib();
         copybit_close(sEngine);
         sEngine = NULL;
     }