Specify /EFI/BOOT as the grub prefix so the grub efi payload can find
the grub.cfg in the same directory. Ultimately, it might make more sense
to install the grub tools and the grub-core modules to sysroot and make the
grub-efi bbclass generate the image in the required format as part of the
bootimg generation. However, bootimg is currently the only user, so make the
correction here to resolve the immediate issue.
Signed-off-by: Darren Hart <dvhart@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>