Fix sparse errors in drivers/net/ibmveth.c

drivers/net/ibmveth.c:96:46: error: marked inline, but without a definition
drivers/net/ibmveth.c:96: warning: 'ibmveth_rxq_harvest_buffer' declared inline after being called
drivers/net/ibmveth.c:96: warning: previous declaration of 'ibmveth_rxq_harvest_buffer' was here

Just let the compiler decide, as it happens gcc 4.~ inlines it anyway.

drivers/net/ibmveth.c:957:71: warning: Using plain integer as NULL pointer
drivers/net/ibmveth.c:964:85: warning: Using plain integer as NULL pointer

Split the long lines as well, ugly, but < 80 columns.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Jeff Garzik <jeff@garzik.org>