serial: sh-sci: fix cannot work SH7723 SCIFA

SH7723 has SCIFA. This module is similer SCI register map, but it has FIFO.
So this patch adds new type(PORT_SCIFA) and change some type checking.

Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index e27f216..4e4f127 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -155,6 +155,9 @@
 
 #define PORT_SC26XX	82
 
+/* SH-SCI */
+#define PORT_SCIFA	83
+
 #ifdef __KERNEL__
 
 #include <linux/compiler.h>