irda: fix !PNP support for drivers/net/irda/smsc-ircc2.c

x86.git testing found this build bug on v2.6.26-rc1:

  ERROR: "pnp_get_resource" [drivers/net/irda/smsc-ircc2.ko] undefined!
  make[1]: *** [__modpost] Error 1
  make: *** [modules] Error 2

the driver did not anticipate the case of !CONFIG_PNP which is rare but 
still possible. Instead of restricting the driver to PNP-only in the 
Kconfig space, add the (trivial) dummy struct pnp_driver - this is that 
other drivers use in the !PNP case too.

The driver itself can in theory be initialized on !PNP too in certain 
cases, via smsc_ircc_legacy_probe().

Patch only minimally build tested, i dont have this hardware.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: David S. Miller <davem@davemloft.net>