crypto: caam - OP-TEE firmware support

caam driver needs to be aware of OP-TEE f/w presence, since some things
are done differently:

1. there is no access to controller's register page (note however that
some registers are aliased in job rings' register pages)

2 Due to this, MCFGR[PS] cannot be read and driver assumes
MCFGR[PS] = b'0 - engine using 32-bit address pointers.

This is in sync with the fact that:
-all i.MX SoCs currently use MCFGR[PS] = b'0
-only i.MX OP-TEE use cases don't allow access to controller register page

Signed-off-by: Horia GeantA <horia.geanta@nxp.com>
Signed-off-by: Meenakshi Aggarwal <meenakshi.aggarwal@nxp.com>
Reviewed-by: Gaurav Jain <gaurav.jain@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto: caam - reduce page 0 regs access to minimum

Use job ring register map, in place of controller register map
to access page 0 registers, as access to the controller register
map is not permitted.

Signed-off-by: Horia GeantA <horia.geanta@nxp.com>
Signed-off-by: Gaurav Jain <gaurav.jain@nxp.com>
Signed-off-by: Meenakshi Aggarwal <meenakshi.aggarwal@nxp.com>
Reviewed-by: Varun Sethi <v.sethi@nxp.com>
Reviewed-by: Gaurav Jain <gaurav.jain@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto: caam - Replace DEFINE_SIMPLE_ATTRIBUTE with DEFINE_DEBUGFS_ATTRIBUTE

Fix the following coccicheck warning:

./drivers/crypto/caam/debugfs.c:23:0-23: WARNING: caam_fops_u64_ro
should be defined with DEFINE_DEBUGFS_ATTRIBUTE.

./drivers/crypto/caam/debugfs.c:22:0-23: WARNING: caam_fops_u32_ro
should be defined with DEFINE_DEBUGFS_ATTRIBUTE.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Reviewed-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto: caam - Move debugfs fops into standalone file

Currently the debugfs fops are defined in caam/intern.h. This causes
problems because it creates identical static functions and variables
in multiple files. It also creates warnings when those files don't
use the fops.

This patch moves them into a standalone file, debugfs.c.

It also removes unnecessary uses of ifdefs on CONFIG_DEBUG_FS.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
[Moved most of debugfs-related operations into debugfs.c.]
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>