dhcp-relay: Pass cross configure flags to bind build

This ensures that host tools like 'gen' are built for build host and not
target. internal bind build supplies its own options to configuring it,
where it does not pass --host option and as a result it does not deduce
it to be a cross compile and hence these variables are not set property
inside bind build

Fixes
| ./gen: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by ./gen)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
(cherry picked from commit d57c465562)
Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>

meta-networking/recipes-connectivity/dhcp/dhcp-relay_4.4.3p1.bb

@@ -34,7 +34,14 @@ SYSTEMD_AUTO_ENABLE:${PN} = "disable"
 CFLAGS += "-D_GNU_SOURCE -fcommon"
 LDFLAGS:append = " -pthread"
 
-EXTRA_OECONF = "--enable-paranoia \
+BIND_EXTRA_CONFIG = "\
+        --build=${BUILD_SYS} \
+        --host=${HOST_SYS} \
+        --target=${TARGET_SYS} \
+"
+
+EXTRA_OECONF = "--with-bind-extra-config="${BIND_EXTRA_CONFIG}" \
+                --enable-paranoia \
                 --disable-static \
                 --enable-libtool \
                 --with-randomdev=/dev/random \