The `data_sz` name is fine, but it looks out of place because nothing
else has "data" prefix in that structure. Rename it to "size", as well
as add more clarity to the comments around each struct member.
Fixes: 6a17919b0e2a ("eal: change power intrinsics API")
Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
Acked-by: Thomas Monjalon <thomas@monjalon.net>