crypto: qat - set deprecated capabilities as reserved

The LZS and RAND features are no longer available on QAT.
Remove the definition of bit 6 (LZS) and bit 7 (RAND) in the enum that
represents the capabilities and replace them with a comment mentioning
that those bits are reserved.
Those bits shall not be used in future.

Signed-off-by: Karthikeyan Gopal <karthikeyan.gopal@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>