common: print \n in initr_scsi()

Typically init_scsi() does not output anything. So initr_scsi() should
provide a \n or we may see borked output like

	SCSI:  Net:   No ethernet found.

as observed with sandbox_defconfig.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>

common/board_r.c

@@ -553,6 +553,7 @@ static int initr_scsi(void)
 {
 	puts("SCSI:  ");
 	scsi_init();
+	puts("\n");
 
 	return 0;
 }