fips: use /lib/modules/$(uname -r)/modules.fips

if /lib/modules/$(uname -r)/modules.fips exists, use that list instead
of the hardcoded dracut module list.

modules.d/01fips/module-setup.sh

@@ -13,12 +13,16 @@ depends() {
 # called by dracut
 installkernel() {
     local _fipsmodules _mod
+    if [[ -f "${srcmods}/modules.fips" ]]; then
+        _fipsmodules="$(cat "${srcmods}/modules.fips")"
+    else
         _fipsmodules="aead aes_generic aes-x86_64 ansi_cprng arc4 authenc authencesn blowfish camellia cast6 cbc ccm "
         _fipsmodules+="chainiv crc32c crct10dif_generic cryptomgr crypto_null ctr cts deflate des des3_ede dm-crypt dm-mod drbg "
         _fipsmodules+="ecb eseqiv fcrypt gcm ghash_generic hmac khazad lzo md4 md5 michael_mic rmd128 "
         _fipsmodules+="rmd160 rmd256 rmd320 rot13 salsa20 seed seqiv serpent sha1 sha224 sha256 sha256_generic "
         _fipsmodules+="sha384 sha512 sha512_generic tcrypt tea tnepres twofish wp256 wp384 wp512 xeta xtea xts zlib "
         _fipsmodules+="aes_s390 des_s390 prng sha256_s390 sha_common des_check_key ghash_s390 sha1_s390 sha512_s390"
+    fi
 
     mkdir -m 0755 -p "${initdir}/etc/modprobe.d"