2.5.47 serial/parallel getting registered twice.

[Zwane Mwaikambo]

Hi,
	having CONFIG_ISAPNP on results in serial being registered twice, 
perhaps the drivers/pnp layer should be cooperating with generic driver 
api? This ends up breaking serial port polling.

Serial: 8250/16550 driver $Revision: 1.1.1.1 $ IRQ sharing enabled
ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
pnp: the driver 'serial' has been registered
pnp: pnp: match found with the PnP device '00:09' and the driver 'serial'
ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
pnp: pnp: match found with the PnP device '00:0c' and the driver 'serial'
ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
pnp: the driver 'parport_pc' has been registered
pnp: pnp: match found with the PnP device '00:0b' and the driver 
'parport_pc'
parport0: PC-style at 0x378 [PCSPP,TRISTATE]
parport0: cpp_daisy: aa5500ff(38)
parport0: assign_addrs: aa5500ff(38)
parport0: cpp_daisy: aa5500ff(38)
parport0: assign_addrs: aa5500ff(38)

without CONFIG_ISAPNP:
Serial: 8250/16550 driver $Revision: 1.1.1.1 $ IRQ sharing enabled
ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
parport0: PC-style at 0x378 [PCSPP,TRISTATE]
parport0: cpp_daisy: aa5500ff(38)
parport0: assign_addrs: aa5500ff(38)
parport0: cpp_daisy: aa5500ff(38)
parport0: assign_addrs: aa5500ff(38)

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