rygel: Update license to LGPLv2.1

Fix the warning below and set proper license according to the
content of file COPYING in Rygel:

WARNING: rygel-0.34.0-r0 do_populate_lic: rygel: \
No generic license file exists for: LGPL1.1 in any provider

According to a git commit in Rygel made two years ago by Jens
Georg: "all: Update license text to LGPLv2.1 proper We always
claimed being LGPLv2.1 but the license text said differently."
In the same time the tag for Rygel 0.34 has been created on
20 March 2017, aka after this git commit. For more details:
https://gitlab.gnome.org/GNOME/rygel/commit/cdcb6bd55efd0c3b7a2fd4ae5c3d8556f69f8402

Furthermore, the changelog of Rygel 0.34.0 also indicates
that the license is LGPLv2.1+ (after a fix in release 0.29.1):
https://abi-laboratory.pro/tracker/changelog/rygel/0.34.0/log.html

Signed-off-by: Leon Anavi <[email protected]>
Signed-off-by: Khem Raj <[email protected]>

meta-multimedia/recipes-connectivity/rygel/rygel_0.34.0.bb

@@ -5,7 +5,7 @@ Additionally, media player software may use Rygel to become a MediaRenderer \
 that may be controlled remotely by a UPnP or DLNA Controller."
 HOMEPAGE = "http://live.gnome.org/Rygel"
 
-LICENSE = "LGPL1.1+"
+LICENSE = "LGPL-2.1"
 LIC_FILES_CHKSUM = "file://COPYING;md5=4fbd65380cdd255951079008b364516c"
 
 DEPENDS = "libxml2 glib-2.0 gssdp gupnp gupnp-av gupnp-dlna gstreamer1.0 gstreamer1.0-plugins-base ossp-uuid libgee libsoup-2.4 libmediaart-2.0 libunistring sqlite3 intltool-native"