Use vabs/fabs on arm/arm64 for intrinsic abs().

Bug: 11579369
Change-Id: If09da85e22786faa13a2d74f62cee68ea67bd087
diff --git a/compiler/dex/quick/mir_to_lir.h b/compiler/dex/quick/mir_to_lir.h
index 512849f..1795931 100644
--- a/compiler/dex/quick/mir_to_lir.h
+++ b/compiler/dex/quick/mir_to_lir.h
@@ -990,8 +990,8 @@
     bool GenInlinedReverseBytes(CallInfo* info, OpSize size);
     bool GenInlinedAbsInt(CallInfo* info);
     virtual bool GenInlinedAbsLong(CallInfo* info);
-    virtual bool GenInlinedAbsFloat(CallInfo* info);
-    virtual bool GenInlinedAbsDouble(CallInfo* info);
+    virtual bool GenInlinedAbsFloat(CallInfo* info) = 0;
+    virtual bool GenInlinedAbsDouble(CallInfo* info) = 0;
     bool GenInlinedFloatCvt(CallInfo* info);
     bool GenInlinedDoubleCvt(CallInfo* info);
     virtual bool GenInlinedArrayCopyCharArray(CallInfo* info);