package/pulseaudio: update the condition on NLS

Since the BR2_SYSTEM_ENABLE_NLS has been introduced [1], the
NLS support can be disabled when BR2_ENABLE_LOCALE is enabled.

So change BR2_ENABLE_LOCALE by BR2_SYSTEM_ENABLE_NLS and while
at it use a positive logic.

Fixes:
[nios2]  http://autobuild.buildroot.net/results/b69/b69c347e2866a97cc2c5d4844d567c4448592d72
[xtensa] http://autobuild.buildroot.net/results/b63/b63fd204fe36200ed5de70fff23cb59cf2bc778c

[1] dc057d2865afafbf76c2bc2685d2dfe852ba7c54

Signed-off-by: Romain Naour <romain.naour@smile.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/pulseaudio/pulseaudio.mk

@@ -117,7 +117,7 @@ PULSEAUDIO_DEPENDENCIES += libxcb xlib_libSM xlib_libXtst
 
 # .desktop file generation needs nls support, so fake it for !locale builds
 # https://bugs.freedesktop.org/show_bug.cgi?id=54658
-ifneq ($(BR2_ENABLE_LOCALE),y)
+ifeq ($(BR2_SYSTEM_ENABLE_NLS),)
 define PULSEAUDIO_FIXUP_DESKTOP_FILES
 	cp $(@D)/src/daemon/pulseaudio.desktop.in \
 		$(@D)/src/daemon/pulseaudio.desktop