ethtool: Expand documentation of struct ethtool_eeprom

	__u8	data[0];

};

/* for passing EEPROM chunks */

/**

 * struct ethtool_eeprom - EEPROM dump

 * @cmd: Command number = %ETHTOOL_GEEPROM, %ETHTOOL_GMODULEEEPROM or

 *	%ETHTOOL_SEEPROM

 * @magic: A 'magic cookie' value to guard against accidental changes.

 *	The value passed in to %ETHTOOL_SEEPROM must match the value

 *	returned by %ETHTOOL_GEEPROM for the same device.  This is

 *	unused when @cmd is %ETHTOOL_GMODULEEEPROM.

 * @offset: Offset within the EEPROM to begin reading/writing, in bytes

 * @len: On entry, number of bytes to read/write.  On successful

 *	return, number of bytes actually read/written.  In case of

 *	error, this may indicate at what point the error occurred.

 * @data: Buffer to read/write from

 *

 * Users may use %ETHTOOL_GDRVINFO or %ETHTOOL_GMODULEINFO to find

 * the length of an on-board or module EEPROM, respectively.  They

 * must allocate the buffer immediately following this structure.

 */

struct ethtool_eeprom {

	__u32	cmd;

	__u32	magic;

	__u32	offset; /* in bytes */

	__u32	len; /* in bytes */

	__u32	offset;

	__u32	len;

	__u8	data[0];

};