Staging: rar_register: depends on PCI

Staging: rar_register: depends on PCI

rar_register driver uses PCI interfaces and PCI devices, so it
should depend on PCI.

Also format the Kconfig help text as normally done.

drivers/staging/rar_register/rar_register.c:623: error: implicit declaration of function 'pci_dev_get'
drivers/staging/rar_register/rar_register.c:623: warning: assignment makes pointer from integer without a cast

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>