sudo: Add missing dep on virtual/crypt

Ensure we have virtual/crypt even if building without PAM; fixes:

  sudo: error in /etc/sudo.conf, line 0 while loading plugin "sudoers_policy"
  sudo: unable to load /usr/libexec/sudo/sudoers.so: /usr/libexec/sudo/sudoers.so: undefined symbol: crypt
  sudo: fatal error, unable to load plugins

(From OE-Core rev: f863713ae255bf5b6619c98ecd36aacbda352bbb)

Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-extended/sudo/sudo_1.8.23.bb

@@ -10,7 +10,7 @@ PAM_SRC_URI = "file://sudo.pam"
 SRC_URI[md5sum] = "ea444d747feb1decfebdffd0b38b0739"
 SRC_URI[sha256sum] = "d863d29b6fc87bc784a3223350e2b28a2ff2c4738f0fb8f1c92bb38c3017e679"
 
-DEPENDS += " ${@bb.utils.contains('DISTRO_FEATURES', 'pam', 'libpam', '', d)}"
+DEPENDS += " virtual/crypt ${@bb.utils.contains('DISTRO_FEATURES', 'pam', 'libpam', '', d)}"
 RDEPENDS_${PN} += " ${@bb.utils.contains('DISTRO_FEATURES', 'pam', 'pam-plugin-limits pam-plugin-keyinit', '', d)}"
 
 EXTRA_OECONF += " \