LU-11071 ldiskfs: fix ldiskfs patch for ubuntu18

LU-11071 ldiskfs: fix ldiskfs patch for ubuntu18

the original ext4-corrupted-inode-block-bitmaps-handling-patches.patch
missed the changes to ext4_validate_inode_bitmap, add it back

Test-Parameters: trivial
Signed-off-by: Li Dongyang <dongyangli@ddn.com>
Change-Id: I42ff97be5c5680be04d69e0e818b622df6bd400d
Reviewed-on: https://review.whamcloud.com/33144
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Yang Sheng <ys@whamcloud.com>
Reviewed-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>