imx: hab: fix srktool -c usage by removing spaces

The srktool option -c does not allow spaces between certificate
filenames. Only commas (',') should separate the filenames. If spaces
are incorrectly included, srktool will not display an error or warning
message but will only process the first certificate in the list.

So adapt documentation accordingly.

Signed-off-by: Christoph Fritz <chf.fritz@googlemail.com>
1 file changed