Adding SystemApi for remaining Telephony errors

Bug: 206121418
Test: Compile apex
Change-Id: I64b5ce44623b5f9f9ac0ac0ffccfe25bdf96ab55
diff --git a/core/api/current.txt b/core/api/current.txt
index 5a293c5..9d87f73 100644
--- a/core/api/current.txt
+++ b/core/api/current.txt
@@ -42981,6 +42981,7 @@
     field public static final int ENCODING_16BIT = 3; // 0x3
     field public static final int ENCODING_7BIT = 1; // 0x1
     field public static final int ENCODING_8BIT = 2; // 0x2
+    field public static final int ENCODING_KSC5601 = 4; // 0x4
     field public static final int ENCODING_UNKNOWN = 0; // 0x0
     field public static final String FORMAT_3GPP = "3gpp";
     field public static final String FORMAT_3GPP2 = "3gpp2";
diff --git a/telephony/java/android/telephony/SmsMessage.java b/telephony/java/android/telephony/SmsMessage.java
index 5a12865..e0145e6 100644
--- a/telephony/java/android/telephony/SmsMessage.java
+++ b/telephony/java/android/telephony/SmsMessage.java
@@ -79,7 +79,7 @@
     public static final int ENCODING_8BIT = 2;
     public static final int ENCODING_16BIT = 3;
     /**
-     * @hide This value is not defined in global standard. Only in Korea, this is used.
+     * This value is not defined in global standard. Only in Korea, this is used.
      */
     public static final int ENCODING_KSC5601 = 4;