build_helper: Add build for RSE-RD-V3-R1 platform

Add build for RSE-RD-V3-R1 for:
- per-patch (single GCC_2_Release_BL2_NSOFF_CFG0)
- nightly
- release
- platform

Signed-off-by: Nicola Mazzucato <nicola.mazzucato@arm.com>
Change-Id: Ic5d723d1e5eb05f3f0e3a1326f18b853230879d8
2 files changed