coverity: exclude FVP RAS handling source file

This patch adds the following source file to exclusion list as it
is not used by any supported build configs for FVP platform:
    - plat/arm/board/fvp/aarch64/fvp_lsp_ras_sp.c

Signed-off-by: Madhukar Pappireddy <madhukar.pappireddy@arm.com>
Change-Id: Ifb9d6d50923bbc6e6e4ff9776fb94226b75be209
1 file changed