[PATCH] hostap: Fix hostap_pci build with PRISM2_IO_DEBUG

The debug version of I/O functions in hostap_pci had not survived the
change to start using hw_priv pointer, so let's fix them to actually
define the local hw_priv variable.

Signed-off-by: Jouni Malinen <jkmaline@cc.hut.fi>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>