[openwrt/openwrt] realtek: EnGenius EWS2910P: use the mtd3 partition for root overlay

[LEDE Commits]

svanheule pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/7bba7ccde9cb021e24ec83f1332aafd5898e23ef

commit 7bba7ccde9cb021e24ec83f1332aafd5898e23ef
Author: Alexandru Gagniuc <mr.nuke.me at gmail.com>
AuthorDate: Sat May 28 20:56:31 2022 -0500

    realtek: EnGenius EWS2910P: use the mtd3 partition for root overlay
    
    The root overlay is mounted on the "rootfs_data" partition. This comes
    at the end of the firmware image, courtesy of mtdsplit. There is very
    little space left (About 1MB), which can fill up rapidly.
    
    The "firmware" and "firmware2" partitions are part of the bootloader
    dual firmware logic. They should contain independent, valid uImages.
    This leaves "jffs2-cfg" (mtd3) and "jffs2-log" (mtd4) as candidates.
    
    mtd3 is about 13.7 MB and is used by the vendor firmware to store
    configuration settings. It is only erased by vendor firmware during a
    factory reset. By naming this partition "rootfs_data", it becomes the
    root overlay, providing significantly more room. Even with mtdsplit
    wanting to create a "rootfs_data" on the firmware partition, mtd3 is
    used as the overlay.
    
    Rename "jffs2-cfg" to "rootfs_data", and profit from the extra space.
    
    Signed-off-by: Alexandru Gagniuc <mr.nuke.me at gmail.com>
---
 target/linux/realtek/dts-5.10/rtl8380_engenius_ews2910p.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target/linux/realtek/dts-5.10/rtl8380_engenius_ews2910p.dts b/target/linux/realtek/dts-5.10/rtl8380_engenius_ews2910p.dts
index dd57b2bf48..9b5ddb5ed4 100644
--- a/target/linux/realtek/dts-5.10/rtl8380_engenius_ews2910p.dts
+++ b/target/linux/realtek/dts-5.10/rtl8380_engenius_ews2910p.dts
@@ -144,7 +144,7 @@
 				reg = <0x90000 0x10000>;
 			};
 			partition at a0000 {
-				label = "jffs2-cfg";
+				label = "rootfs_data";
 				reg = <0xa0000 0xd60000>;
 			};
 			partition at e00000 {