grub-efi: Use /EFI/BOOT now that mkdosfs -d works with directories
[Yocto 1783] prevented us from using a proper /EFI/BOOT path in the live
images due to a bug in the -d patch for mkdosfs in dosfstools. With this
now fixed, we can place the efi payload where it belongs per spec and
the images will autoboot to the grub menu on EFI platforms.
Signed-off-by: Darren Hart <dvhart@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
