update firmware for rt2870 and >=rt3071
required for future changes

update run(4) microcode.
split it into two separate files while i'm at it since there are
actually two different firmwares (one for RT2870/RT3070 and one
for >=RT3071).

Add RT2870 firmware with the same license as the rest of
the Ralink firmware files.

Discussed with Paul Lin at Ralink.

Separate rum(4) firmware from ral(4) ones.

ral(4) firmwares are built on PCI-capable architectures only while rum(4)
firmware is built on USB-capable architectures only.
Rename ral-rt2573 into rum-r

Separate rum(4) firmware from ral(4) ones.

ral(4) firmwares are built on PCI-capable architectures only while rum(4)
firmware is built on USB-capable architectures only.
Rename ral-rt2573 into rum-rt2573 and build rum-rt2573 on the zaurus too
(pointed out by Patrick Heim).

ok deraadt@

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