ANDROID: fips140: use UTS_RELEASE as FIPS version

Use the standard auto-generated kernel version string instead of a
manually assigned version number that will get out-of-date.  There was
discussion of custom version numbers being needed for certification
purposes, but it appears that they won't be needed after all.

This will produce a version string like
"5.10.66-android12-9-00017-g0b8a0a4df237".

Bug: 188620248
Change-Id: Ia369e91e4a18f489418123c672686e05ca99063d
Signed-off-by: Eric Biggers <ebiggers@google.com>