serial: fix vr41xx_siu serial console support

The serial console can select only SERIAL_VR41XX=y.
Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/serial/Kconfig

@@ -1191,7 +1191,7 @@ config SERIAL_VR41XX
 
 config SERIAL_VR41XX_CONSOLE
 	bool "Enable NEC VR4100 series Serial Interface Unit console"
-	depends on SERIAL_VR41XX
+	depends on SERIAL_VR41XX=y
 	select SERIAL_CORE_CONSOLE
 	help
 	  If you have a NEC VR4100 series processor and you want to use

drivers/serial/vr41xx_siu.c

@@ -65,7 +65,9 @@ static struct uart_port siu_uart_ports[SIU_PORTS_MAX] = {
 	},
 };
 
+#ifdef CONFIG_SERIAL_VR41XX_CONSOLE
 static uint8_t lsr_break_flag[SIU_PORTS_MAX];
+#endif
 
 #define siu_read(port, offset)		readb((port)->membase + (offset))
 #define siu_write(port, offset, value)	writeb((value), (port)->membase + (offset))