forked from Mirrors/opensbi

As per the SBI specification, we should "unconditionally select the first counter from the set of counters specified by the counter_idx_base and counter_idx_mask", so implement this behaviour. Suggested-by: Atish Patra <atishp@atishpatra.org> Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com> Reviewed-by: Atish Patra <atishp@rivosinc.com>