common/dpaax/caamflib: fix build with musl

common/dpaax/caamflib: fix build with musl

The swab16/swab32/swab64 are Linux specific and not GNU libc specific.
Keep the check for __GLIBC__ just in case other GNU systems depends on
this (Hurd or GNU/kFreeBSD).

This fixes a build error with musl libc.

Fixes: 04711d41a872 ("crypto/dpaa2_sec: add run-time assembler for descriptor")
Cc: stable@dpdk.org
Signed-off-by: Natanael Copa <ncopa@alpinelinux.org>
Acked-by: Hemant Agrawal <hemant.agrawal@nxp.com>
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Acked-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Acked-by: David Marchand <david.marchand@redhat.com>