replace aesni target detection macros

Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
diff --git a/library/aes.c b/library/aes.c
index c9610f5..0a7b26c 100644
--- a/library/aes.c
+++ b/library/aes.c
@@ -40,14 +40,13 @@
 #endif
 #endif
 
-#if defined(__amd64__) || defined(__x86_64__) || \
-    ((defined(_M_X64) || defined(_M_AMD64)) && !defined(_M_ARM64EC))
+#if defined(MBEDTLS_ARCH_IS_X64)
 #if !defined(MBEDTLS_AESNI_C) && defined(MBEDTLS_AES_USE_HARDWARE_ONLY)
 #error "MBEDTLS_AES_USE_HARDWARE_ONLY defined, but not all prerequisites"
 #endif
 #endif
 
-#if defined(__i386__) || defined(_M_IX86)
+#if defined(MBEDTLS_ARCH_IS_X86)
 #if defined(MBEDTLS_AES_USE_HARDWARE_ONLY) && !defined(MBEDTLS_AESNI_C)
 #error "MBEDTLS_AES_USE_HARDWARE_ONLY defined, but not all prerequisites"
 #endif
diff --git a/library/aesni.h b/library/aesni.h
index 332a0f0..e9064ee 100644
--- a/library/aesni.h
+++ b/library/aesni.h
@@ -35,20 +35,9 @@
 /* Can we do AESNI with inline assembly?
  * (Only implemented with gas syntax, only for 64-bit.)
  */
-#if !defined(MBEDTLS_HAVE_X86_64) && \
-    (defined(__amd64__) || defined(__x86_64__) || \
-    defined(_M_X64) || defined(_M_AMD64)) && \
-    !defined(_M_ARM64EC)
-#define MBEDTLS_HAVE_X86_64
-#endif
-
-#if !defined(MBEDTLS_HAVE_X86) && \
-    (defined(__i386__) || defined(_M_IX86))
-#define MBEDTLS_HAVE_X86
-#endif
 
 #if defined(MBEDTLS_AESNI_C) && \
-    (defined(MBEDTLS_HAVE_X86_64) || defined(MBEDTLS_HAVE_X86))
+    (defined(MBEDTLS_ARCH_IS_X64) || defined(MBEDTLS_ARCH_IS_X86))
 
 /* Can we do AESNI with intrinsics?
  * (Only implemented with certain compilers, only for certain targets.)
@@ -75,7 +64,7 @@
 #if defined(MBEDTLS_AESNI_HAVE_INTRINSICS)
 #define MBEDTLS_AESNI_HAVE_CODE 2 // via intrinsics
 #elif defined(MBEDTLS_HAVE_ASM) && \
-    defined(__GNUC__) && defined(MBEDTLS_HAVE_X86_64)
+    defined(__GNUC__) && defined(MBEDTLS_ARCH_IS_X64)
 #define MBEDTLS_AESNI_HAVE_CODE 1 // via assembly
 #elif defined(__GNUC__)
 #   error "Must use `-mpclmul -msse2 -maes` for MBEDTLS_AESNI_C"