Update to latest meta-webkit (hardknott compatibility)

* local.conf.sample updated:
  * cog: 0.10
  * libwpe: 1.10
  * wpewebkit: 2.32
  * wpebacked-rdk: 1.20210402
* Compatibility layer updated to hardknott
* Git modules updated

Signed-off-by: Pablo Saavedra <[email protected]>

.gitmodules

@@ -1,20 +1,20 @@
 [submodule "base-image/meta-openembedded"]
 	path = base-image/meta-openembedded
 	url = git://git.openembedded.org/meta-openembedded
-	branch = sumo
+	branch = hardknott
 [submodule "base-image/poky"]
 	path = base-image/poky
 	url = git://git.yoctoproject.org/poky
-	branch = sumo
+	branch = hardknott
 [submodule "base-image/meta-raspberrypi"]
 	path = base-image/meta-raspberrypi
 	url = git://git.yoctoproject.org/meta-raspberrypi
-	branch = sumo
+	branch = hardknott
 [submodule "base-image/meta-gstreamer1.0"]
 	path = base-image/meta-gstreamer1.0
 	url = https://github.com/OSSystems/meta-gstreamer1.0
-	branch = sumo
+	branch = master
 [submodule "base-image/meta-webkit"]
 	path = base-image/meta-webkit
 	url = https://github.com/Igalia/meta-webkit
-	branch = sumo
+	branch = main

base-image/meta-resin-wpe/conf/layer.conf

@@ -7,4 +7,4 @@ BBFILE_COLLECTIONS += "resin-wpe"
 BBFILE_PATTERN_resin-wpe := "^${LAYERDIR}/"
 BBFILE_PRIORITY_resin-wpe = "99"
 
-LAYERSERIES_COMPAT_resin-wpe = "sumo"
+LAYERSERIES_COMPAT_resin-wpe = "hardknott"