[BUILD FAILURE 07/12] Next April 21 : PPC64 randconfig [drivers/net/lance.o]

Observing this for the first time:

CC      drivers/net/lance.o
drivers/net/lance.c: In function ‘lance_probe1’:
drivers/net/lance.c:575: error: implicit declaration of function
‘isa_virt_to_bus’
drivers/net/lance.c: In function ‘lance_rx’:
drivers/net/lance.c:1197: error: implicit declaration of function
‘isa_bus_to_virt’
make[2]: *** [drivers/net/lance.o] Error 1
make[1]: *** [drivers/net] Error 2
make: *** [drivers] Error 2
---

Regards--
Subrata