Remove direct references to mcra

Remove direct references to flint

In order to improve compatability, remove the direct use of the
proprietary "flint" executable, preferring mstflint where available.
Also, do not depend on mst for the PCI conf device.

Address fedora review comments

- Add comment showing how to create srpm from .rpkg file
- use "install -p" instead of %{__install}

bfrec: Support standard capsule update (Mellanox#20)

* bfrec: Support standard capsule update

This commit adds support for the standard capsule upgrade. The
same capsule file MmcBootCap will be used as default file but
it contains a real capsule and will be copied to the standard
directory <efi_partition>/EFI/UpdateCapsule/ when applied. For
old version of boot images without this capsule support it'll
fall back to use default bootctl mode.

* mlx-mkbfb & build-bfb: Add capsule support

This commit obsoletes the support for mmc-cap & spi-img. Instead
a new argument is added for standard UEFI capsule.

update with latest script changes

The bfinst script now allows install of grub EFI.
The bffamily script uses arrays so changed to bash.