[PULL][Vivid-SRU] ARM64: support APM xgene2

[Ming Lei]

This addresses LP: #1473818, and make vivid kernel bootable
on APM xgene2 SoC.

The following changes since commit d9d8a603912d7368a9657ec51d1f9f2a35149233:

  Linux 3.19.8-ckt3

are available in the git repository at:

  git://kernel.ubuntu.com/ming/ubuntu-vivid.git  for-xgene2

for you to fetch changes up to cc17c2b80de0913f585cf48594599a6326b8e7bd :

cc17c2b (no-up) arm64: dts: add APM Merlin Board device tree
9d3fa3d drivers: net: xgene: Add SGMII based 1GbE support with ring manager v2
f0c2c3f drivers: net: xgene: Add 10GbE support with ring manager v2
f96478c drivers: net: xgene: Add ring manager v2 functions
13092e5 drivers: net: xgene: Change ring manager to use function pointers
4f45463 drivers: net: xgene: Add separate tx completion ring
83cdaa9 dtb: xgene: Add interrupt for Tx completion
8bd8cff Documentation: dts: xgene: Update interrupt field description
34a145e ata: ahci_xgene: Add AHCI Support for 2nd HW version of APM X-Gene SoC A
d7e15b8 libahci: Add support to handle HOST_IRQ_STAT as edge trigger latch.
498277c libahci: Refactoring of ahci_single_irq_intr function.
a79f554 ata: ahci_platform: fix owner module reference mismatch for scsi host

Thanks,
Ming