juno: Fix AArch32 build
juno: Fix AArch32 build

Commit 6de8b24f52cf2bd74adefbaa86dd2a0676c3eaa2 broke Juno AArch32
build.

Change-Id: Ied70d9becb86e53ccb46a2e3245e2a551d1bf701
Signed-off-by: Dimitris Papastamos <5172875e934a989df22d22726b6d9d921b91fbdd@arm.com>

lsigithub/arm-trusted-firmware_public,achingupta/arm-trusted-firmware,achingupta/arm-trusted-firmware,lsigithub/arm-trusted-firmware_public