Defines starting with `p' in iokit/Drivers/network/drvPPCUniN

• PCI_PERIOD_33MHz iokit/Drivers/network/drvPPCUniN/UniNEnetRegisters.h:47
• PCI_PERIOD_66MHz iokit/Drivers/network/drvPPCUniN/UniNEnetRegisters.h:48