meta-rauc-raspberrypi: Support Wrynose

Switch to the new Yocto LTS release Wrynose. Remove meta-lts-mixins,
as it is no longer required because openembedded-core now includes
U-Boot version 2026.01, which adds support for Raspberry Pi 5.

Signed-off-by: Leon Anavi <leon.anavi@konsulko.com>

Author: leon-anavi

meta-rauc-raspberrypi/conf/layer.conf

@@ -10,10 +10,7 @@ BBFILE_PATTERN_meta-rauc-raspberrypi = "^${LAYERDIR}/"
 BBFILE_PRIORITY_meta-rauc-raspberrypi = "6"
 
 LAYERDEPENDS_meta-rauc-raspberrypi = "core rauc raspberrypi"
-# For u-boot support for raspberrypi5
-# https://git.yoctoproject.org/meta-lts-mixins scarthgap/u-boot branch
-LAYERRECOMMENDS_meta-rauc-raspberrypi = "lts-u-boot-mixin"
-LAYERSERIES_COMPAT_meta-rauc-raspberrypi = "whinlatter"
+LAYERSERIES_COMPAT_meta-rauc-raspberrypi = "wrynose"
 
 RAUC_KEY_FILE ?= "${LAYERDIR}/../files/rauc-example-keys/development-1.key.pem"
 RAUC_CERT_FILE ?= "${LAYERDIR}/../files/rauc-example-keys/development-1.cert.pem"