Drivers/SataSiI3132Dxe: Fixed PCI IO read and write operations

Drivers/SataSiI3132Dxe: Fixed PCI IO read and write operations

The ATA pass through read should use PCI IO bus master write operation
and ATA pass through write should use PCI IO bus master read operation
as the read and write operations are executed from the bus master's
point of view.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Daniil Egranov <daniil.egranov@arm.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>