flex: only needs gettext if locale is selected

Also add missing select in Config.in.

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Acked-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/flex/Config.in

@@ -1,5 +1,6 @@
 config BR2_PACKAGE_FLEX
 	bool "flex"
+	select BR2_PACKAGE_GETTEXT if BR2_NEEDS_GETTEXT_IF_LOCALE
 	help
 	  A fast lexical analyser generator.  A tool for generating
 	  programs that perform pattern-matching on text.

package/flex/flex.mk

@@ -10,7 +10,7 @@ FLEX_INSTALL_STAGING = YES
 FLEX_LICENSE = FLEX
 FLEX_LICENSE_FILES = COPYING
 FLEX_DEPENDENCIES = \
-	$(if $(BR2_PACKAGE_GETTEXT),gettext) host-m4
+	$(if $(BR2_PACKAGE_GETTEXT_IF_LOCALE),gettext) host-m4
 # we don't have a host-gettext/libintl
 HOST_FLEX_DEPENDENCIES = host-m4