[PULL][Trusty][SRU] ahci xgene bug fixes

[Craig Magina]

Hi,

This branch contains 3 bug fixes in the ahci_xgene driver found during
testing. They have all been submitted upstream, but have yet to be
accepted.

    BugLink: http://bugs.launchpad.net/bugs/1359489
    BugLink: http://bugs.launchpad.net/bugs/1359501
    BugLink: http://bugs.launchpad.net/bugs/1359507

    git://kernel.ubuntu.com/cmagina/trusty-xgene.git sata-for-ubuntu-20140829

1125e3a UBUNTU: SAUCE: (no-up) arm64: Fix the csr-mask for APM X-Gene
SoC AHCI SATA PHY clock DTS node.
869340b UBUNTU: SAUCE: (no-up) ahci_xgene: Skip the PHY and clock
initialization if already configured by the firmware.
191e509 UBUNTU: SAUCE: (no-up) ahci_xgene: Fix the link down in first
attempt for the APM X-Gene SoC AHCI SATA host controller driver.

Thanks,
-- 
Craig Magina
Hyperscale Team
Canonical