crypto: qat - relocate and rename get_service_enabled()

Move the function get_service_enabled() from adf_4xxx_hw_data.c to
adf_cfg_services.c and rename it as adf_get_service_enabled().
This function is not specific to the 4xxx and will be used by
other QAT drivers.

This does not introduce any functional change.

Signed-off-by: Jie Wang <jie.wang@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto: qat - move adf_cfg_services

The file adf_cfg_services.h cannot be included in header files since it
instantiates the structure adf_cfg_services. Move that structure to its
own file and export the symbol.

This does not introduce any functional change.

Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Damian Muszynski <damian.muszynski@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto: qat - enable dc chaining service

QAT GEN4 devices support chained compression operations. These
allow, with a single request to firmware, to hash then compress
data.

Extend the configuration to enable such mode. The cfg_services
operations in sysfs are extended to allow the string "dcc". When
selected, the driver downloads to the device both the symmetric
crypto and the compression firmware images and sends an admin message
to firmware which enables `chained` operations.
In addition, it sets the device's capabilities as the combination
of compression and symmetric crypto capabilities, while excluding
the ICP_ACCEL_CAPABILITIES_CRYPTO_SYMMETRIC bit to indicate
that in this mode, symmetric crypto instances are not supported.

When "dcc" is enabled, the device will handle compression requests
as if the "dc" configuration is loaded ("dcc" is a variation of "dc")
and the driver will register the acomp algorithms.

As for the other extended configurations, "dcc" is only available for
qat_4xxx devices and the chaining service will be only accessible from
user space.

Signed-off-by: Adam Guerin <adam.guerin@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto: qat - consolidate services structure

The data structure that associates a service id with its name is
replicated across the driver.
Remove duplication by moving this data structure to a new include file,
adf_cfg_services.h in order to have consistency across the drivers.

Note that the data structure is re-instantiated every time the new
include is added to a compilation unit.

Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>