mkefidsk: fix bash/dash shell quoting problem
mkefidsk currently writes a startup.nsh with embedded control characters.
This happens because \b etc are control sequences to the shell echo
command when using dash. The resulting startup.nsh causes the bootup
to fail, and the user is dropped into the EFI shell to manually run
startup.nsh.
Patch originally provided by Troy D. Hanson <troy.hanson@jhuapl.edu>
[YOCTO #9665]
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit
008d6cb5bb4969f53a228893c502be8c9420ecb0)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
