cmd: terminal: avoid serial_reinit_all() with DM_SERIAL enabled

serial_reinit_all() is only available when CONFIG DM_SERIAL is disabled
and CONFIG_SERIAL is enabled.

Signed-off-by: Aditya Dutt <duttaditya18@gmail.com>

cmd/terminal.c

@@ -24,7 +24,7 @@ int do_terminal(struct cmd_tbl *cmd, int flag, int argc, char *const argv[])
 	if (!dev)
 		return -1;
 
-	if (IS_ENABLED(CONFIG_SERIAL))
+	if (IS_ENABLED(CONFIG_SERIAL) && !IS_ENABLED(CONFIG_DM_SERIAL))
 		serial_reinit_all();
 
 	printf("Entering terminal mode for port %s\n", dev->name);