realtek: ONTi ONT-S508CL-8S is a relabeled XikeStor SKS8300-8X

Both hardware and firmware of these devices appears identical except for the
manufacturers logo and device name.  The documented XikeStor SKS8300-8X
installation method is verified to work on the ONTi ONT-S508CL-8S using
Openwrt images made for the XikeStor SKS8300-8X. This includes the OEM boot
loader magic password phrases.

Signed-off-by: Bjørn Mork <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/18071
Signed-off-by: Sander Vanheule <[email protected]>

target/linux/realtek/image/rtl930x.mk

@@ -9,6 +9,8 @@ define Device/xikestor_sks8300-8x
   SOC := rtl9303
   DEVICE_VENDOR := XikeStor
   DEVICE_MODEL := SKS8300-8X
+  DEVICE_ALT0_VENDOR := ONTi
+  DEVICE_ALT0_MODEL := ONT-S508CL-8S
   BLOCKSIZE := 64k
   KERNEL_SIZE := 8192k
   IMAGE_SIZE := 30720k