network-manager: use a <pkg>_VERSION_MAJOR variable

Just like we do for many other GNOME-hosted tarballs, use a
<pkg>_VERSION_MAJOR variable for network-manager.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/network-manager/network-manager.mk

@@ -3,9 +3,11 @@
 # NetworkManager
 #
 #############################################################
-NETWORK_MANAGER_VERSION = 0.9.2.0
+
+NETWORK_MANAGER_VERSION_MAJOR = 0.9
+NETWORK_MANAGER_VERSION = $(NETWORK_MANAGER_VERSION_MAJOR).2.0
 NETWORK_MANAGER_SOURCE = NetworkManager-$(NETWORK_MANAGER_VERSION).tar.bz2
-NETWORK_MANAGER_SITE = http://ftp.gnome.org/pub/GNOME/sources/NetworkManager/0.9/
+NETWORK_MANAGER_SITE = http://ftp.gnome.org/pub/GNOME/sources/NetworkManager/$(NETWORK_MANAGER_VERSION_MAJOR)
 NETWORK_MANAGER_INSTALL_STAGING = YES
 NETWORK_MANAGER_DEPENDENCIES = host-pkgconf udev dbus-glib libnl gnutls \
 	libgcrypt wireless_tools util-linux host-intltool