Engage vpaes-armv8 module.

Reviewed-by: Richard Levitte <levitte@openssl.org>

Configure

diff --git a/Configure b/Configure
index a35bafd..ba8cd96 100755
--- a/Configure
+++ b/Configure
@@ -425,7 +425,7 @@
     aarch64_asm => {
 	template	=> 1,
 	cpuid_obj       => "armcap.o arm64cpuid.o mem_clr.o",
-	aes_obj         => "aes_core.o aes_cbc.o aesv8-armx.o",
+	aes_obj         => "aes_core.o aes_cbc.o aesv8-armx.o vpaes-armv8.o",
 	sha1_obj        => "sha1-armv8.o sha256-armv8.o sha512-armv8.o",
 	modes_obj       => "ghashv8-armx.o",
     },

crypto/evp/e_aes.c

diff --git a/crypto/evp/e_aes.c b/crypto/evp/e_aes.c
index 4fab21b..7b4d84f 100644
--- a/crypto/evp/e_aes.c
+++ b/crypto/evp/e_aes.c
@@ -980,6 +980,9 @@
 #   if defined(BSAES_ASM)
 #    define BSAES_CAPABLE (OPENSSL_armcap_P & ARMV7_NEON)
 #   endif
+#   if defined(VPAES_ASM)
+#    define VPAES_CAPABLE (OPENSSL_armcap_P & ARMV7_NEON)
+#   endif
 #   define HWAES_CAPABLE (OPENSSL_armcap_P & ARMV8_AES)
 #   define HWAES_set_encrypt_key aes_v8_set_encrypt_key
 #   define HWAES_set_decrypt_key aes_v8_set_decrypt_key