Fix the problem that sim2 can not copy imei

Set the CopyingEnabled value to true.

Fix: 239327568
Test: manually test and review UI
Change-Id: Id0025588aa4a93ec06f976c2569404627883c25a

src/com/android/settings/deviceinfo/imei/ImeiInfoPreferenceController.java

@@ -74,6 +74,7 @@ public class ImeiInfoPreferenceController extends BasePreferenceController {
         for (int simSlotNumber = 1; simSlotNumber < mTelephonyManager.getPhoneCount();
                 simSlotNumber++) {
             final Preference multiSimPreference = createNewPreference(screen.getContext());
+            multiSimPreference.setCopyingEnabled(true);
             multiSimPreference.setOrder(imeiPreferenceOrder + simSlotNumber);
             multiSimPreference.setKey(getPreferenceKey() + simSlotNumber);
             category.addPreference(multiSimPreference);