Greenhills compiler: fix asm and volatile

Greenhills compiler doesn't accept volatile and __asm__ needs to be
__asm.

Author: SparkiDev

wolfcrypt/src/port/arm/armv8-32-aes-asm_c.c

@@ -51,6 +51,8 @@
 #define __volatile__   volatile
 #endif /* __KEIL__ */
 #ifdef __ghs__
+#define __asm__        __asm
+#define __volatile__
 #define WOLFSSL_NO_VAR_ASSIGN_REG
 #endif /* __ghs__ */
 #ifndef NO_AES

wolfcrypt/src/port/arm/armv8-32-chacha-asm_c.c

@@ -51,6 +51,8 @@
 #define __volatile__   volatile
 #endif /* __KEIL__ */
 #ifdef __ghs__
+#define __asm__        __asm
+#define __volatile__
 #define WOLFSSL_NO_VAR_ASSIGN_REG
 #endif /* __ghs__ */
 #ifdef HAVE_CHACHA

wolfcrypt/src/port/arm/armv8-32-curve25519_c.c

@@ -51,6 +51,8 @@
 #define __volatile__   volatile
 #endif /* __KEIL__ */
 #ifdef __ghs__
+#define __asm__        __asm
+#define __volatile__
 #define WOLFSSL_NO_VAR_ASSIGN_REG
 #endif /* __ghs__ */
 /* Based on work by: Emil Lenngren

wolfcrypt/src/port/arm/armv8-32-mlkem-asm_c.c

@@ -51,6 +51,8 @@
 #define __volatile__   volatile
 #endif /* __KEIL__ */
 #ifdef __ghs__
+#define __asm__        __asm
+#define __volatile__
 #define WOLFSSL_NO_VAR_ASSIGN_REG
 #endif /* __ghs__ */
 #include <wolfssl/wolfcrypt/wc_mlkem.h>

wolfcrypt/src/port/arm/armv8-32-poly1305-asm_c.c

@@ -51,6 +51,8 @@
 #define __volatile__   volatile
 #endif /* __KEIL__ */
 #ifdef __ghs__
+#define __asm__        __asm
+#define __volatile__
 #define WOLFSSL_NO_VAR_ASSIGN_REG
 #endif /* __ghs__ */
 #ifdef HAVE_POLY1305

wolfcrypt/src/port/arm/armv8-32-sha256-asm_c.c

@@ -51,6 +51,8 @@
 #define __volatile__   volatile
 #endif /* __KEIL__ */
 #ifdef __ghs__
+#define __asm__        __asm
+#define __volatile__
 #define WOLFSSL_NO_VAR_ASSIGN_REG
 #endif /* __ghs__ */
 #ifndef NO_SHA256

wolfcrypt/src/port/arm/armv8-32-sha3-asm_c.c

@@ -51,6 +51,8 @@
 #define __volatile__   volatile
 #endif /* __KEIL__ */
 #ifdef __ghs__
+#define __asm__        __asm
+#define __volatile__
 #define WOLFSSL_NO_VAR_ASSIGN_REG
 #endif /* __ghs__ */
 #ifdef WOLFSSL_SHA3

wolfcrypt/src/port/arm/armv8-32-sha512-asm_c.c

@@ -51,6 +51,8 @@
 #define __volatile__   volatile
 #endif /* __KEIL__ */
 #ifdef __ghs__
+#define __asm__        __asm
+#define __volatile__
 #define WOLFSSL_NO_VAR_ASSIGN_REG
 #endif /* __ghs__ */
 #if defined(WOLFSSL_SHA512) || defined(WOLFSSL_SHA384)