crypto: qat - enable RAS support for GEN6 devices

crypto: qat - enable RAS support for GEN6 devices

Enable the reporting and handling of errors for QAT GEN6 devices.

Errors are categorized as correctable, non-fatal, or fatal. Error
handling involves reading the error source registers (ERRSOU0 to ERRSOU3)
to determine the source of the error and then decoding the actual source
reading specific registers.

The action taken depends on the error type:
   - Correctable and Non-Fatal errors. These error are logged, cleared and
     the corresponding counter is incremented.
   - Fatal errors. These errors are logged, cleared and a Function Level
     Reset (FLR) is scheduled.

This reports and handles the following errors:
   - Accelerator engine (AE) correctable errors
   - Accelerator engine (AE) uncorrectable errors
   - Chassis push-pull (CPP) errors
   - Host interface (HI) parity errors
   - Internal memory parity errors
   - Receive interface (RI) errors
   - Transmit interface (TI) errors
   - Interface for system-on-chip (SoC) fabric (IOSF) primary command
     parity errors
   - Shared RAM and slice module (SSM) errors

Signed-off-by: Suman Kumar Chakraborty <suman.kumar.chakraborty@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>