crypto: cavium/nitrox - fix firmware assignment to AE cores

This patch fixes assigning UCD block number of Asymmetric crypto
firmware to AE cores of CNN55XX device.

Fixes: a7268c4d ("crypto: cavium/nitrox - Add support for loading asymmetric crypto firmware")
Signed-off-by: Phani Kiran Hemadri <phemadri@marvell.com>
Reviewed-by: Srikanth Jampala <jsrikanth@marvell.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>