fetchmail: use the new gettext logic

This commit switches to use the new gettext logic, which involves
using TARGET_NLS_DEPENDENCIES instead of hand-encoded dependencies on
gettext/host-gettext.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/fetchmail/fetchmail.mk

@@ -24,12 +24,8 @@ FETCHMAIL_CONF_OPTS = \
 
 FETCHMAIL_DEPENDENCIES = \
 	ca-certificates \
-	openssl
-
-# libintl is an optional dependency
-ifeq ($(BR2_PACKAGE_GETTEXT),y)
-FETCHMAIL_DEPENDENCIES += gettext
-endif
+	openssl \
+	$(TARGET_NLS_DEPENDENCIES)
 
 # fetchmailconf.py script is not (yet) python3-compliant.
 # Prevent the pyc-compilation with python-3 from failing by removing this