build cstor for arm， cannot create cstor pool

[wangzihao3]

Is this a BUG REPORT or FEATURE REQUEST?

Choose one: FEATURE REQUEST

What happened:
I changed the codes of openebs/cstor and openebs/libcstor for arm buildings. It can be compiled and built successfully but shows errors when create cstor pool. I can create cstor pool by using sparse blockdevice but failed by using disk blockdevice.
What you expected to happen:
create cstor pool by using disk blockdevice
How to reproduce it (as minimally and precisely as possible):
Here are the code changes wangzihao3/cstor@aafeeef and wangzihao3/libcstor@7282578.
the codes I changed mostly according to https://github.com/DPDK/dpdk/tree/master/lib/librte_eal/common/include/arch/arm.

Anything else we need to know?:
reference: https://openebs-community.slack.com/archives/C3NPGQ6G3/p1571453110322800
Environment:

• Maya version (use maya version):
  1.3.0

• M-apiserver version (use m-apiserver version):
  1.3.0

• OS (e.g. from /etc/os-release):
  Master: Centos7.6 Node1: Ubuntu18.04 Node2: Centoos7.6

• Kernel (e.g. uname -a):
  Master: Linux master 4.14.0-115.10.1.el7a.aarch64 Create a Nomad demo setup - Type 1 #1 SMP Tue Jul 30 14:50:37 UTC 2019 aarch64 aarch64 aarch64 GNU/Linux
  Node1: Linux ubuntu 4.15.0-45-generic Getting runtime stats from replica #48-Ubuntu SMP Tue Jan 29 16:32:18 UTC 2019 aarch64 aarch64 aarch64 GNU/Linux
  Node2: Linux node1 4.14.0-115.el7a.0.1.aarch64 Create a Nomad demo setup - Type 1 #1 SMP Sun Nov 25 20:54:21 UTC 2018 aarch64 aarch64 aarch64 GNU/Linux

• Install tools:

• Others:
  I used the disks I didn't use before and didn't do the wipe out operation.
  Here are the information of disk.

Name:         blockdevice-94b501381f87bd82b00f8a743aec99f2
Namespace:    openebs
Labels:       kubernetes.io/hostname=ubuntu
              ndm.io/blockdevice-type=blockdevice
              ndm.io/managed=true
Annotations:  <none>
API Version:  openebs.io/v1alpha1
Kind:         BlockDevice
Metadata:
  Creation Timestamp:  2019-10-20T10:14:20Z
  Generation:          4
  Resource Version:    1710
  Self Link:           /apis/openebs.io/v1alpha1/namespaces/openebs/blockdevices/blockdevice-94b501381f87bd82b00f8a743aec99f2
  UID:                 09dcc043-135a-4c62-aac7-4c9f96aba019
Spec:
  Capacity:
    Logical Sector Size:   512
    Physical Sector Size:  0
    Storage:               3999999721472
  Details:
    Compliance:         SPC-3
    Device Type:
    Firmware Revision:
    Model:              AVAGO
    Serial:             6101b5442bcc70001c374ffe2a306e01
    Vendor:             AVAGO
  Devlinks:
    Kind:  by-id
    Links:
      /dev/disk/by-id/scsi-36101b5442bcc70001c374ffe2a306e01
      /dev/disk/by-id/wwn-0x6101b5442bcc70001c374ffe2a306e01
    Kind:  by-path
    Links:
      /dev/disk/by-path/pci-0000:03:00.0-scsi-0:2:4:0
  Filesystem:
  Node Attributes:
    Node Name:  ubuntu
  Partitioned:  No
  Path:         /dev/sde
Status:
  Claim State:  Unclaimed
  State:        Active
Events:         <none>