Replace cpu modifier flags

`crypto` should be replace with `aes`.

See https://arm-software.github.io/acle/main/acle.html#cryptographic-extensions

Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
diff --git a/library/aesce.c b/library/aesce.c
index 65c79f7..ed3cca1 100644
--- a/library/aesce.c
+++ b/library/aesce.c
@@ -78,11 +78,11 @@
 #       if __ARMCOMPILER_VERSION <= 6090000
 #           error "Must use minimum -march=armv8-a+crypto for MBEDTLS_AESCE_C"
 #       else
-#           pragma clang attribute push (__attribute__((target("crypto,aes"))), apply_to=function)
+#           pragma clang attribute push (__attribute__((target("aes"))), apply_to=function)
 #           define MBEDTLS_POP_TARGET_PRAGMA
 #       endif
 #   elif defined(__clang__)
-#       pragma clang attribute push (__attribute__((target("crypto"))), apply_to=function)
+#       pragma clang attribute push (__attribute__((target("aes"))), apply_to=function)
 #       define MBEDTLS_POP_TARGET_PRAGMA
 #   elif defined(__GNUC__)
 #       pragma GCC push_options