[U-Boot] [U-Boot,v3,03/21] efi: add some missing __packed

[Alexander Graf]

> All of the device-path related structures should be packed.  UEFI
> defines the device-path as a byte-aligned data structure.
> 
> Signed-off-by: Rob Clark <robdclark at gmail.com>

Thanks, applied to efi-next

Alex