[PATCH] i2c: add i2c_clientname()

This patch just adds a #define and a inline function to hide the
"i2c_client->name" => "i2c_client->dev.name" move introduced by
the recent i2c updates.  That makes it easier to build i2c drivers
on both 2.4 and 2.5 kernels.

include/linux/i2c.h

@@ -182,6 +182,13 @@ static inline void i2c_set_clientdata (struct i2c_client *dev, void *data)
 	return dev_set_drvdata (&dev->dev, data);
 }
 
+#define I2C_DEVNAME(str)   .dev = { .name = str }
+
+static inline char *i2c_clientname(struct i2c_client *c)
+{
+	return c->dev.name;
+}
+
 /*
  * The following structs are for those who like to implement new bus drivers:
  * i2c_algorithm is the interface to a class of hardware solutions which can