[] [MT7981: add rootwait attributes]

[Description]
Add rootwait attributes

[Release-log]
N/A

[Test]
Build pass and platform bootup

Change-Id: I5d2589880c7b4aea253154d8e3cc5561b204f659
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7249039
diff --git a/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7981-emmc-rfb.dts b/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7981-emmc-rfb.dts
index bf2628e..3c801b3 100644
--- a/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7981-emmc-rfb.dts
+++ b/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7981-emmc-rfb.dts
@@ -6,7 +6,8 @@
 	chosen {
 		bootargs = "console=ttyS0,115200n1 loglevel=8  \
 				earlycon=uart8250,mmio32,0x11002000 \
-				root=PARTLABEL=rootfs rootfstype=squashfs,f2fs";
+				root=PARTLABEL=rootfs rootwait \
+				rootfstype=squashfs,f2fs";
 	};
 
 	memory {
diff --git a/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7981-fpga-emmc.dts b/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7981-fpga-emmc.dts
index 6c3a197..d90a9bf 100644
--- a/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7981-fpga-emmc.dts
+++ b/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7981-fpga-emmc.dts
@@ -6,7 +6,8 @@
 	chosen {
 		bootargs = "console=ttyS0,115200n1 loglevel=8  \
 				earlycon=uart8250,mmio32,0x11002000 \
-				root=PARTLABEL=rootfs rootfstype=squashfs,f2fs";
+				root=PARTLABEL=rootfs rootwait \
+				rootfstype=squashfs,f2fs";
 	};
 
 	memory {
diff --git a/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7981-fpga-sd.dts b/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7981-fpga-sd.dts
index deca60b..4bf50ce 100644
--- a/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7981-fpga-sd.dts
+++ b/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7981-fpga-sd.dts
@@ -6,7 +6,8 @@
 	chosen {
 		bootargs = "console=ttyS0,115200n1 loglevel=8  \
 				earlycon=uart8250,mmio32,0x11002000 \
-				root=PARTLABEL=rootfs rootfstype=squashfs,f2fs";
+				root=PARTLABEL=rootfs rootwait \
+				rootfstype=squashfs,f2fs";
 	};
 
 	memory {
diff --git a/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7981-sd-rfb.dts b/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7981-sd-rfb.dts
index 7d0c097..0c8620b 100644
--- a/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7981-sd-rfb.dts
+++ b/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7981-sd-rfb.dts
@@ -6,7 +6,8 @@
 	chosen {
 		bootargs = "console=ttyS0,115200n1 loglevel=8  \
 				earlycon=uart8250,mmio32,0x11002000 \
-				root=PARTLABEL=rootfs rootfstype=squashfs,f2fs";
+				root=PARTLABEL=rootfs rootwait \
+				rootfstype=squashfs,f2fs";
 	};
 
 	memory {