package/uftp: fix compilation with openssl

Build fails with -lssl but succeeds with -lcrypto, also thats how it is
linked by default in 'makefile'.

Fixes:

  http://autobuild.buildroot.net/results/01a455ddcbc16cd2111352d22bf6603842df4ab2

Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/uftp/uftp.mk

@@ -11,7 +11,7 @@ UFTP_LICENSE_FILES = LICENSE.txt
 
 ifeq ($(BR2_PACKAGE_OPENSSL),y)
 UFTP_DEPENDENCIES += host-pkgconf openssl
-UFTP_MAKE_OPTS += CRYPT_LIB="`$(PKG_CONFIG_HOST_BINARY) --libs libssl`"
+UFTP_MAKE_OPTS += CRYPT_LIB="`$(PKG_CONFIG_HOST_BINARY) --libs libcrypto`"
 else
 UFTP_MAKE_OPTS += NO_ENCRYPTION=1
 endif