[PATCH] dtc: give advance warning that "-S" is going away.

[Jon Loeliger]

> The "-S" option allowed the specification of a minimum size for
> the blob, however the main reason for caring about the size is
> so there is enough padding to add a chosen node by u-boot or
> whoever.  In which case, folks don't really care about the absolute
> size, but rather the size of the padding added for this -- which
> is what the "-p" option does.  Having the "-S" just confuses people.
> 
> Signed-off-by: Paul Gortmaker <paul.gortmaker at windriver.com>

Applied.

jdl