2158d8e8a7
There is no prototype of _gcry_sha256_transform_intel_shaext() defined in the header or libgcrypt-grub/cipher/sha256.c, and gcc may complain the missing-prototypes error when compiling sha256-intel-shaext.c. Declare the prototype in sha256-intel-shaext.c to avoid the error. Signed-off-by: Gary Lin <glin@suse.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>