ARM: dts: gemini: Mount root from mtdblock3

The third mtdblock device named "Application" is where we
want to mount our root filesystem.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

arch/arm/boot/dts/gemini-nas4220b.dts

@@ -20,7 +20,7 @@ memory@0 { /* 128 MB */
 	};
 
 	chosen {
-		bootargs = "console=ttyS0,19200n8";
+		bootargs = "console=ttyS0,19200n8 root=/dev/mtdblock3 rw rootfstype=squashfs,jffs2 rootwait";
 		stdout-path = &uart0;
 	};
 

arch/arm/boot/dts/gemini-sl93512r.dts

@@ -24,7 +24,7 @@ memory@0 {
 	};
 
 	chosen {
-		bootargs = "console=ttyS0,19200n8 root=/dev/sda1 rw rootwait";
+		bootargs = "console=ttyS0,19200n8 root=/dev/mtdblock3 rw rootfstype=squashfs,jffs2 rootwait";
 		stdout-path = &uart0;
 	};