crypto: ghash-clmulni-intel - Put proper .data section in place

Lbswap_mask, Lpoly and Ltwo_one should clearly belong to
.data section, not .text.

Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>