lzo: bump to version 2.08

According to the LZO website: "LZO 2.08 has been released: small
update that corrects some reported build problems.". And indeed it
fixes the failed compiler conformance tests that have been observed on
the autobuilders.

Fixes:

  http://autobuild.buildroot.org/results/1e8/1e8e826c4463c9dd3aa5ddb95f08b9564d10a75d/



Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>