Add default constructor to NR cell classes

The default constructor is missing in CellInfoNr and CellIdentityNr
classes. All the other CellInfo* and CellIdentity* classes have it.

Also, add setCellIdentity(CellIdentityNr) method to CellInfoNr.

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1202369
Bug: 147260058
Test: m
Merged-In: I4617272446ffb32d5d33d14d825f4ed919cc1c47
Change-Id: I4617272446ffb32d5d33d14d825f4ed919cc1c47
(cherry picked from commit 23382679eb)

telephony/java/android/telephony/CellIdentityNr.java

@@ -50,6 +50,18 @@ public final class CellIdentityNr extends CellIdentity {
     // a list of additional PLMN-IDs reported for this cell
     private final ArraySet<String> mAdditionalPlmns;
 
+    /** @hide */
+    public CellIdentityNr() {
+        super(TAG, CellInfo.TYPE_NR, null, null, null, null);
+        mNrArfcn = CellInfo.UNAVAILABLE;
+        mPci = CellInfo.UNAVAILABLE;
+        mTac = CellInfo.UNAVAILABLE;
+        mNci = CellInfo.UNAVAILABLE;
+        mBands = new int[] {};
+        mAdditionalPlmns = new ArraySet();
+        mGlobalCellId = null;
+    }
+
     /**
      *
      * @param pci Physical Cell Id in range [0, 1007].

telephony/java/android/telephony/CellInfoNr.java

@@ -29,9 +29,16 @@ import java.util.Objects;
 public final class CellInfoNr extends CellInfo {
     private static final String TAG = "CellInfoNr";
 
-    private final CellIdentityNr mCellIdentity;
+    private CellIdentityNr mCellIdentity;
     private final CellSignalStrengthNr mCellSignalStrength;
 
+    /** @hide */
+    public CellInfoNr() {
+        super();
+        mCellIdentity = new CellIdentityNr();
+        mCellSignalStrength = new CellSignalStrengthNr();
+    }
+
     private CellInfoNr(Parcel in) {
         super(in);
         mCellIdentity = CellIdentityNr.CREATOR.createFromParcel(in);
@@ -71,6 +78,11 @@ public final class CellInfoNr extends CellInfo {
         return mCellIdentity;
     }
 
+    /** @hide */
+    public void setCellIdentity(CellIdentityNr cid) {
+        mCellIdentity = cid;
+    }
+
     /**
      * @return a {@link CellSignalStrengthNr} instance.
      */