crypto: caam - Clean up report_deco_status()

Clean this function up and rework it into sensible shape. This function
now contains one single dev_err() instead of the previous insanity full
of memory allocation, chaotic string handling and use of SPRINTFCAT().

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Horia Geanta <horia.geanta@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>