osi: compat: fix build with glibc >= 2.38

Starting with version 2.38, glibc is providing its own
definition and implementation for the strlcpy fun.

Therefore we add a test to avoid redefining it in floss
if glibc > 2.38.

This is required so we can upgrade CrOS to glibc 2.39.

Bug: 324437695
Test: mma -j32
Flags: Execption, trivial
Change-Id: I22fd00470db03b183e20469fdc382e61e6d99985