Fix p9auth dependency/build failure. It needs to depend on
CRYPTO.
p9auth.c:(.text+0x107297): undefined reference to `crypto_alloc_base'
p9auth.c:(.text+0x1073d4): undefined reference to `crypto_destroy_tfm'
Signed-off-by: Randy Dunlap
Cc: Ashwin Ganti
Signed-off-by: Greg Kroah-Hartman