test/distro: add rddaniel as supported platform

Allow distro boot test on RD-Daniel Config-M platforms by including
the platform name 'rddaniel' in the list of platform supported.

Change-Id: I53c278c274f755e3fcd46d487914e247597701f8
Signed-off-by: Thomas Abraham <thomas.abraham@arm.com>

sgi/distro.sh

@@ -44,6 +44,7 @@ platforms_sgi[sgi575]=1
 declare -A platforms_rdinfra
 platforms_rdinfra[rdn1edge]=1
 platforms_rdinfra[rde1edge]=1
+platforms_rdinfra[rddaniel]=1
 
 install ()
 {