s390/zcrypt: remove the exporting of ap_query_configuration

s390/zcrypt: remove the exporting of ap_query_configuration

The function ap_query_configuration is declared static and marked
EXPORT_SYMBOL, which is at best an odd combination. Because the
function is not used outside of the drivers/s390/crypto/ap_bus.c
file it is defined in, this commit removes the EXPORT_SYMBOL() marking.

Link: http://lkml.kernel.org/r/[email protected]
Fixes: f1b0a4343c41 ("s390/zcrypt: Integrate ap_asm.h into include/asm/ap.h.")
Fixes: 050349b5b71d ("s390/zcrypt: externalize AP config info query")
Signed-off-by: Denis Efremov <[email protected]>
Reviewed-by: Harald Freudenberger <[email protected]>
Signed-off-by: Vasily Gorbik <[email protected]>