i2c: Rename i2c_bus to I2CBus

Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
diff --git a/hw/i2c/versatile_i2c.c b/hw/i2c/versatile_i2c.c
index 02e9f17..3c0c2c1 100644
--- a/hw/i2c/versatile_i2c.c
+++ b/hw/i2c/versatile_i2c.c
@@ -81,7 +81,7 @@
 {
     DeviceState *dev = DEVICE(sbd);
     VersatileI2CState *s = VERSATILE_I2C(dev);
-    i2c_bus *bus;
+    I2CBus *bus;
 
     bus = i2c_init_bus(dev, "i2c");
     s->bitbang = bitbang_i2c_init(bus);