i2c: Update references to individual i2c commands

The individual i2c commands imd, imm, inm, imw, icrc32, iprobe, iloop,
and isdram are no longer available so all references to them have been
updated to the new form of "i2c <cmd>".

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
14 files changed