serial: uart_hostlink: Use __noinline macro

Use Zephy's toolchain definition instead of re-define here.

Signed-off-by: Flavio Ceolin <[email protected]>

Author: ceolin

drivers/serial/uart_hostlink.c

@@ -6,6 +6,7 @@
 
 #include <zephyr/drivers/uart.h>
 #include <zephyr/kernel.h>
+#include <zephyr/toolchain.h>
 #include <string.h>
 
 #define DT_DRV_COMPAT snps_hostlink_uart
@@ -35,10 +36,6 @@ BUILD_ASSERT(IS_ENABLED(CONFIG_ARC));
 #define HL_SYSCALL_GETCWD	17
 #define HL_SYSCALL_USER		18
 
-#ifndef __noinline
-#define __noinline __attribute__((noinline))
-#endif /* __noinline */
-
 #define HL_VERSION 1
 
 /* "No message here" mark.  */