refactor(plat/fvp): update FVP platform DTS for FEAT_RME

This patch make minor modifications to FVP DTS including modifying
the Non-secure memory range when RME is enabled.

Signed-off-by: Zelalem Aweke <zelalem.aweke@arm.com>
Change-Id: I6b3650a2abfff10462a8a2d42755e6d764f7b035
1 file changed