[][kernel][mt7988][dts][Refactor UBI partition size]

[Description]
Refactor UBI partition size to 128M
1. include NMBM size 8M

[Release-log]

Change-Id: If83c646fcb4938de63925ccded32a74b83c2cefd
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/6887942
diff --git a/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7988a-dsa-e2p5g-spim-nand.dts b/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7988a-dsa-e2p5g-spim-nand.dts
index 6de8a1c..d6795ee 100644
--- a/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7988a-dsa-e2p5g-spim-nand.dts
+++ b/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7988a-dsa-e2p5g-spim-nand.dts
@@ -60,7 +60,7 @@
 
 			partition@780000 {
 				label = "ubi";
-				reg = <0x780000 0x7880000>;
+				reg = <0x780000 0x7080000>;
 			};
 		};
 	};