fix file specification in comments

Many files include the filename at the beginning, serveral used a wrong one.

Signed-off-by: Uwe Zeisberger <Uwe_Zeisberger@digi.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/drivers/i2c/busses/i2c-ibm_iic.h b/drivers/i2c/busses/i2c-ibm_iic.h
index 2b3219d..59d7b43 100644
--- a/drivers/i2c/busses/i2c-ibm_iic.h
+++ b/drivers/i2c/busses/i2c-ibm_iic.h
@@ -1,5 +1,5 @@
 /*
- * drivers/i2c/i2c-ibm_iic.h
+ * drivers/i2c/busses/i2c-ibm_iic.h
  *
  * Support for the IIC peripheral on IBM PPC 4xx
  *