CyanogenMod/android_vendor_cyanogen — comment on commit 2b9fe47f205ac4a2f82e0d700a0422829db6cdb7
File:  line 0
By burnsra:

Peter -

I believe he took that from the fingerprint for the crespo4g. Google does at least reference a 2.3.7 for the Crespo though...

http://code.google.com/android/nexus/drivers.html#crespogwk74