[CRYPTO]: aes-586-asm: formatting changes

From: Denis Vlasenko <vda@port.imtp.ilyichevsk.odessa.ua>

- Macro parameters renamed for clarity.

- Inaccurate comments fixed.

- ebp register usage de-obfuscated (this is needed for next patch).

No real code changes.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>