RPi2: use fido branch to get raspberrypi2 support

Dizzy branch does not have support for RPI2.

Change-Id: I900554d3c5510c3dd6cce6e5eb4f5aff85fa26da
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@theqtcompany.com>

scripts/manifest_dizzy.xml

@@ -36,7 +36,7 @@
            groups="notdefault,ti,bbb"/>
   <project name="meta-raspberrypi"
            remote="yocto"
-           revision="dizzy"
+           revision="fido"
            path="sources/meta-raspberrypi"
            groups="notdefault,rpi"/>
   <project name="meta-fsl-arm-extra"