altos/usbtrng-v2.0: Use stmf042 hardware CRC unit
authorKeith Packard <keithp@keithp.com>
Wed, 28 Jan 2015 01:18:42 +0000 (17:18 -0800)
committerKeith Packard <keithp@keithp.com>
Wed, 28 Jan 2015 01:18:42 +0000 (17:18 -0800)
Switch from software to hardware for CRC computation. I think this
must be faster, right?

Signed-off-by: Keith Packard <keithp@keithp.com>

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