mediatek: mt7623: bpi-r2: set root=/dev/fit0 in bootargs

Set root=/dev/fit0 cmdline parameter as the kernel won't mount rootfs
otherwise after the change from the FIT partition parser to the fitblk
driver which replaces it.

Fixes: 6368ed1ae5 ("mediatek: mt7623: phase out uImage.FIT partition parser")
Signed-off-by: Daniel Golle <[email protected]>

target/linux/mediatek/patches-6.1/164-dts-mt7623-bpi-r2-rootdisk-for-fitblk.patch

@@ -1,9 +1,11 @@
 --- a/arch/arm/boot/dts/mt7623n-bananapi-bpi-r2.dts
 +++ b/arch/arm/boot/dts/mt7623n-bananapi-bpi-r2.dts
-@@ -27,6 +27,8 @@
+@@ -26,7 +26,9 @@
+ 
  	chosen {
  		stdout-path = "serial2:115200n8";
- 		bootargs = "earlycon=uart8250,mmio32,0x11004000 console=ttyS2,115200n8 console=tty1";
+-		bootargs = "earlycon=uart8250,mmio32,0x11004000 console=ttyS2,115200n8 console=tty1";
++		bootargs = "root=/dev/fit0 earlycon=uart8250,mmio32,0x11004000 console=ttyS2,115200n8 console=tty1";
 +		rootdisk-emmc = <&emmc_rootdisk>;
 +		rootdisk-sd = <&sd_rootdisk>;
  	};