Add support for DC CVADP instruction.

DC CVADP is one of the data cache maintenance instruction(DC).
It clean data cache by virtual address to Point of Deep Persistence.

Change-Id: I5e9d62b8591ca3dc5053dfbebcd1ba24b9d5408f
diff --git a/test/test-api.cc b/test/test-api.cc
index d3a6201..219d4df 100644
--- a/test/test-api.cc
+++ b/test/test-api.cc
@@ -386,7 +386,8 @@
       // Armv8.1
       "Atomics, LORegions, RDM, "
       // Armv8.2
-      "SVE, DotProduct, FPHalf, NEONHalf, RAS, DCPoP, SHA3, SHA512, SM3, SM4, "
+      "SVE, DotProduct, FPHalf, NEONHalf, RAS, DCPoP, DCCVADP, SHA3, SHA512, "
+      "SM3, SM4, "
       // Armv8.3
       "PAuth, PAuthQARMA, PAuthGeneric, PAuthGenericQARMA, JSCVT, Fcma, RCpc, "
       // Armv8.4