fix kABI breakage from "crypto: hash - Add crypto_ahash_has_setkey"

fix kABI breakage from "crypto: hash - Add crypto_ahash_has_setkey"

Orabug: 23330916

Orabug: 23330916

Commit c1af244e143b4010401d70ba504c927196c75077 ("crypto: hash - Add
crypto_ahash_has_setkey") added an element "bool has_setkey" to the
crypto_ahash structure.  This element was added in a place where
there had been a "hole" in the structure, so the change affected
neither the offsets of the other elements nor the overall size of
the structure.

This commit wraps the new element in "#ifndef __GENKSYMS__" to hide
it from the kABI checker.

Signed-off-by: Dan Duval <dan.duval@oracle.com>
(cherry picked from commit da07fada818b94d1187241bcc1a7ed270a09a4f9)

Signed-off-by: Dan Duval <dan.duval@oracle.com>