drop grub-2.00-ppc-no-tree-scanning.patch fixed upstream
    
    revno: 4334
    committer: Vladimir 'phcoder' Serbinenko <phcoder@gmail.com>
    branch nick: grub
    timestamp: Sun 2012-05-13 20:29:23 +0200
    message:
            * grub-core/disk/ieee1275/ofdisk.c (scan): Don't scan device tree if
            GRUB_IEEE1275_FLAG_NO_TREE_SCANNING_FOR_DISKS is set.
            * grub-core/kern/ieee1275/cmain.c (grub_ieee1275_find_options): Set
            GRUB_IEEE1275_FLAG_NO_TREE_SCANNING_FOR_DISKS on IBM hardware.
            * include/grub/ieee1275/ieee1275.h (grub_ieee1275_flag): New enum value
            GRUB_IEEE1275_FLAG_NO_TREE_SCANNING_FOR_DISKS.