[coreboot] [PATCH]: Add superio sch4304 support.

[Bao, Zheng]

Add support of superio sch4304. The Device id is 0x90. The number of
X-BUS
logical device is 11.

I have not get the board to test it. I will have one. But I believe it
is
right, isn't it?

Signed-off-by: Zheng Bao

Index: src/superio/smsc/smscsuperio/superio.c
===================================================================
--- src/superio/smsc/smscsuperio/superio.c	(revision 4952)
+++ src/superio/smsc/smscsuperio/superio.c	(working copy)
@@ -61,6 +61,7 @@
 #define SCH3112		0x7c
 #define SCH5307		0x81	/* Rebranded LPC47B397(?) */
 #define SCH5027D	0x89
+#define SCH4304		0x90	/* SCH4304 */

/* Register defines */
 #define DEVICE_ID_REG	0x20	/* Device ID register */
@@ -137,6 +138,7 @@
    {SCH3112,  {0, 3, 4,  5, -1,  7, -1,  -1, -1,  -1, -1, -1, 10,
-1, -1}},
    {SCH5307,  {0, 3, 4,  5, -1,  7, -1,  -1,  8,  -1, -1, -1, 10,
-1, -1}},
    {SCH5027D, {0, 3, 4,  5, -1,  7, -1,  -1, -1,  -1, -1, -1, 10,
-1, 11}},
+	{SCH4304,  {0, 3, 4,  5, -1,  7, -1,  11, -1,  -1, -1, -1, 10,
-1, -1}},
 };

/**