[openwrt/openwrt] realtek: switch XGS1250-12 to rt-loader

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/aa01ca3ec820e85c7a57dd7cfa7b812f9f35fcbe

commit aa01ca3ec820e85c7a57dd7cfa7b812f9f35fcbe
Author: Stijn Segers <foss at volatilesystems.org>
AuthorDate: Sat Oct 18 12:49:15 2025 +0200

    realtek: switch XGS1250-12 to rt-loader
    
    Allows us a bit more headroom flash wise and access to more recent
    compression algorithms.
    
    Signed-off-by: Stijn Segers <foss at volatilesystems.org>
    Link: https://github.com/openwrt/openwrt/pull/20445
    Signed-off-by: Hauke Mehrtens <hauke at hauke-m.de>
---
 target/linux/realtek/image/rtl930x.mk | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/target/linux/realtek/image/rtl930x.mk b/target/linux/realtek/image/rtl930x.mk
index 7492cd7584..1b574c1433 100644
--- a/target/linux/realtek/image/rtl930x.mk
+++ b/target/linux/realtek/image/rtl930x.mk
@@ -119,12 +119,19 @@ define Device/zyxel_xgs1250-12-common
   DEVICE_MODEL := XGS1250-12
   DEVICE_PACKAGES := kmod-hwmon-gpiofan kmod-thermal
   IMAGE_SIZE := 13312k
+  KERNEL := \
+	kernel-bin | \
+	append-dtb | \
+	rt-compress | \
+	rt-loader | \
+	uImage none
   KERNEL_INITRAMFS := \
 	kernel-bin | \
 	append-dtb | \
-	gzip | \
+	rt-compress | \
 	zyxel-vers | \
-	uImage gzip
+	rt-loader | \
+	uImage none
 endef
 
 define Device/zyxel_xgs1250-12-a1