MAINTAINERS: Add missing i2c files

Add missing header files to the i2c subsystem section.
Signed-off-by: Jean Delvare <khali@linux-fr.org>

MAINTAINERS

@@ -2533,8 +2533,7 @@ S:	Maintained
 F:	Documentation/i2c/
 F:	drivers/i2c/
 F:	include/linux/i2c.h
-F:	include/linux/i2c-dev.h
-F:	include/linux/i2c-id.h
+F:	include/linux/i2c-*.h
 
 I2C-TINY-USB DRIVER
 M:	Till Harbaum <till@harbaum.org>