usb: host: xhci-tegra: Correct phy enable sequence

XUSB phy needs to be enabled before un-powergating the power partitions.
However in the current sequence, it happens opposite. Correct the phy
enable and powergating partition sequence to avoid any boot hangs.

Signed-off-by: Nagarjuna Kristam <nkristam@nvidia.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Jui Chang Kuo <jckuo@nvidia.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/1572859470-7823-1-git-send-email-nkristam@nvidia.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>