Add call32_params() helper function.

Add helper function for calling 32bit functions with more than just
one parameter.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Add space between DTYPE_* definitions.

Avoi consective numbering on the DTYPE_* definitions.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
xhci: Run the XHCI driver entirely in 32bit mode.

Since the XHCI driver needs to jump into 32bit mode anyway, it is
simpler to just run all of the code in 32bit mode.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Remove pci_writel() and pci_readl() functions.

These functions are no longer used.  Going forward it's better to move
a driver to full 32bit mode then to use these functions.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>