[IA64] Enable ForteMedia in zx1 defconfig

Patch from Matthew Wilcox:
The FM801 chip is built-in to the zx2000 workstation.  There's a lot
of noise in the patch because the defconfig hasn't been updated in a
few releases.

Tony> I tweaked a couple of other CONFIG options (enabled MCA_RECOVERY
and TMPFS_XATTR, disabled TCPDIAG).
Signed-off-by: Tony Luck <tony.luck@intel.com>