forked from Mirrors/opensbi

event-to-mhpmevent was deprecated and replaced by riscv,event-to-mhpmevent, but a reference remains to the old name. Replace it with the new one. Signed-off-by: Conor Dooley <conor.dooley@microchip.com> Reviewed-by: Atish Patra <atishp@rivosinc.com> Reviewed-by: Anup Patel <anup@brainfault.org>