Fix Sun bug #7035791: scanpci should report 64 bit registers

Fix Sun bug #7035791: scanpci should report 64 bit registers

On a system which has allocated 64-bit device addresses scanpci -v
will show entries such as:
[...]
  BASE0     0xce000000 SIZE 16777216  MEM
  BASE1     0x00000fc1f8000000 SIZE 134217728  MEM64 PREFETCHABLE
  BASE3     0x00000fc1f6000000 SIZE 33554432  MEM64 PREFETCHABLE
[...]
instead of:
[...]
  BASE0     0xce000000 SIZE 16777216  MEM
  BASE1     0xf8000000 SIZE 134217728  MEM PREFETCHABLE
  BASE3     0xf6000000 SIZE 33554432  MEM PREFETCHABLE
[...]

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>