usb: xhci: use bus->sysdev for DMA configuration

For xhci-hcd platform device, all the DMA parameters are not
configured properly, notably dma ops for dwc3 devices. So, set
the dma for xhci from sysdev. sysdev is pointing to device that
is known to the system firmware or hardware.

Cc: Baolin Wang <baolin.wang@linaro.org>

Tested-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Tested-by: Vivek Gautam <vivek.gautam@codeaurora.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sriram Dash <sriram.dash@nxp.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Change-Id: I5a909abc30a101dcbd4b8f495a360e8dc46377bc
Git-commit: 4c39d4b949d36faffbc726525b469886cf311d1c
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git


[jackp@codeaurora.org: additional fixups to secondary ring functions]
Signed-off-by: Jack Pham <jackp@codeaurora.org>