USB: emi62: Provide the correct bitstream firmware

Commit b8e24bf ('emi62: use request_firmware()') made
emi62/bitstream.HEX a copy of emi26/bitstream.HEX.  Re-do the
conversion from drivers/usb/misc/emi62_fw_{m,s}.h (these headers
contained the same bitstream but different firmware).

This produces an identical blob to the known working version in
http://people.xiph.org/~xiphmont/emagic/emi-20131209.tgz

Reported-by: Monty <[email protected]>
Cc: David Woodhouse <[email protected]>
Signed-off-by: Ben Hutchings <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>