package/ntp: fix OpenSSL detection

Fixes:
https://autobuild.buildroot.org/results/261e630f20dd20b7f606a7bcbd8fa7b50ce82fbe/

The build error occurs when libatomic is needed for linking.
In ntp_openssl.m4 the result of OpenSSL's pkgconf was omitted.

Enable configure option --enable-verbose-ssl to help future debugging:
configure: ntp_ssl_libs_l:   (-lssl -lcrypto -latomic)

Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
Signed-off-by: Julien Olivain <ju.o@free.fr>
(cherry picked from commit 6a20660c5a)
Signed-off-by: Thomas Perale <thomas.perale@mind.be>

package/ntp/0005-fix-openssl-configure.patch

@@ -0,0 +1,18 @@
+Fix OpenSSL detection
+
+Upstream: https://bugs.ntp.org/show_bug.cgi?id=3985
+
+Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
+
+diff -uNr ntp-4.2.8p18.orig/sntp/m4/ntp_openssl.m4 ntp-4.2.8p18/sntp/m4/ntp_openssl.m4
+--- ntp-4.2.8p18.orig/sntp/m4/ntp_openssl.m4	2024-05-07 13:21:14.000000000 +0200
++++ ntp-4.2.8p18/sntp/m4/ntp_openssl.m4	2025-07-06 08:37:14.140657598 +0200
+@@ -326,7 +326,7 @@
+ 	     not_found) ;;
+ 	     *)
+ 		AC_MSG_NOTICE([Searching for libcrypto in $i])
+-		LIBS="-L$i $NTPSSL_SAVED_LIBS"
++		LIBS="-L$i $ntp_ssl_libs_l $NTPSSL_SAVED_LIBS"
+ 		AC_CHECK_LIB(
+ 		    [crypto],
+ 		    [EVP_MD_CTX_new],

package/ntp/ntp.mk

@@ -29,7 +29,7 @@ NTP_CONF_OPTS = \
 NTP_AUTORECONF = YES
 
 ifeq ($(BR2_PACKAGE_OPENSSL),y)
-NTP_CONF_OPTS += --with-crypto --enable-openssl-random
+NTP_CONF_OPTS += --with-crypto --enable-openssl-random --enable-verbose-ssl
 NTP_DEPENDENCIES += openssl
 else
 NTP_CONF_OPTS += --without-crypto --disable-openssl-random