sections: fix const sections for crc32 table

sections: fix const sections for crc32 table

Fix the const sections for the code generated by crc32 table.  There's no
ro version of the cacheline aligned section, so we cannot put in const
data without a conflict Just don't make the crc tables const for now.

[ak@linux.intel.com: some fixes and new description]
Signed-off-by: Joe Mario <jmario@redhat.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>