target/sh4: log unauthorized accesses using qemu_log_mask

qemu_log_mask() is preferred over fprintf() for logging errors.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

target/sh4/helper.c

@@ -420,7 +420,7 @@ static int get_physical_address(CPUSH4State * env, target_ulong * physical,
         if (!(env->sr & (1u << SR_MD))
 	    && (address < 0xe0000000 || address >= 0xe4000000)) {
 	    /* Unauthorized access in user mode (only store queues are available) */
-	    fprintf(stderr, "Unauthorized access\n");
+            qemu_log_mask(LOG_GUEST_ERROR, "Unauthorized access\n");
 	    if (rw == 0)
 		return MMU_DADDR_ERROR_READ;
 	    else if (rw == 1)