Update the iic(4) man page about the use of slave address

[loos]

Summary

Could you verify my grammar for the following change (on iic.4) ? I need some help to make this text clear and concise.

iic.4

Clarify about the use of the 7-bit slave addresses on iic ioctls.

iicbus.4

Add the cross reference for iic(4).

[brueffer]

share/man/man4/iic.4

54

This sentence sounds pretty circular to me. How about this?

The
.Va slave
element consists of a 7-bit address and a read/write bit
(i.e., 7-bit address << 1 | r/w).

66

Should be: ".Dv I2CSTART ." on a new line.

[loos]

Right Chris! I think it is a lot better with your change, please check if it is fine now, i'll bump the .Dd dates when it is ready for commit.

[brueffer]

Looks good!

[loos]

Thank you Chris. Committed in r267834.