hostap_pci and hostap_plx drivers still use PCI driver names
"prism2_pci" and "prism2_plx" respectively.  This is unfriendly to
linux-wlan-ng, which uses the same names.  So, if e.g. hostap_pci and
prism2_pci are loaded, they will "share" /sys/bus/pci/drivers/prism2_plx
directory.

Change PCI driver names of hostap_pci and hostap_plx to be equal to
their module names.
Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: Jouni Malinen <jkmaline@cc.hut.fi>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>