forked from Mirrors/opensbi

This patch adds support to check for zicfilp / zicfiss extension. zicfilp record status of hart's ELP state in *status csr. Missing landing pad sets MPELP in mstatus. When SBI is redirecting back to S/VS/HS, SPELP is set in sstatus/vsstatus. Signed-off-by: Deepak Gupta <debug@rivosinc.com> Reviewed-by: Atish Patra <atishp@rivosinc.com> Reviewed-by: Samuel Holland <samuel.holland@sifive.com>