[AArch64] Update for Exynos

Fix the costs of FP register moves.
diff --git a/llvm/lib/Target/AArch64/AArch64SchedExynosM4.td b/llvm/lib/Target/AArch64/AArch64SchedExynosM4.td
index 60a6a2b..caac07b 100644
--- a/llvm/lib/Target/AArch64/AArch64SchedExynosM4.td
+++ b/llvm/lib/Target/AArch64/AArch64SchedExynosM4.td
@@ -541,7 +541,7 @@
 // FP miscellaneous instructions.
 def : SchedAlias<WriteFCvt,  M4WriteFCVT2>;
 def : SchedAlias<WriteFImm,  M4WriteNALU1>;
-def : SchedAlias<WriteFCopy, M4WriteCOPY>;
+def : SchedAlias<WriteFCopy, M4WriteNALU1>;
 
 // FP load instructions.
 def : SchedAlias<WriteVLD, M4WriteL5>;