Rename _BOOLEAN visual voicemail config keys to _BOOL

Bug:28294644
Change-Id: I81435a6e38b4754e9c32fa2e638ce2947068a88c
diff --git a/src/com/android/phone/vvm/omtp/OmtpVvmCarrierConfigHelper.java b/src/com/android/phone/vvm/omtp/OmtpVvmCarrierConfigHelper.java
index 61cf6d3..9534a10 100644
--- a/src/com/android/phone/vvm/omtp/OmtpVvmCarrierConfigHelper.java
+++ b/src/com/android/phone/vvm/omtp/OmtpVvmCarrierConfigHelper.java
@@ -94,7 +94,7 @@
             return false;
         }
         return mCarrierConfig
-                .getBoolean(CarrierConfigManager.KEY_VVM_CELLULAR_DATA_REQUIRED_BOOLEAN);
+                .getBoolean(CarrierConfigManager.KEY_VVM_CELLULAR_DATA_REQUIRED_BOOL);
     }
 
     public boolean isPrefetchEnabled() {
@@ -102,7 +102,7 @@
             return false;
         }
         return mCarrierConfig
-                .getBoolean(CarrierConfigManager.KEY_VVM_PREFETCH_BOOLEAN);
+                .getBoolean(CarrierConfigManager.KEY_VVM_PREFETCH_BOOL);
     }
 
     public void startActivation() {