Partial MFC of change 228122:

Due to the requirement that tty prefixes be unique per driver, rename
the Altera JTAG UART devices to ttyj#.

Sponsored by:	DARPA, AFRL
MFP4 changes 222065 and 222068:

Add a simplebus attachment for cfi(4)'s FDT support and move
cfi_bus_fdt.c to sys/conf/files so non-ppc architectures are supported.

Sponsored by:	DARPA, AFRL
MFP4 change 222060:

On Intel devices, put the Factory PPR in kenv.  On some FPGA boards it may
be the only software accessable unique ID.

Sponsored by:	DARPA, AFRL