hw/core: tcg-cpu-ops.h: Update comments of debug_check_watchpoint()

This is now used by RISC-V as well. Update the comments.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20220421003324.1134983-7-bmeng.cn@gmail.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>

include/hw/core/tcg-cpu-ops.h

@@ -90,6 +90,7 @@ struct TCGCPUOps {
     /**
      * @debug_check_watchpoint: return true if the architectural
      * watchpoint whose address has matched should really fire, used by ARM
+     * and RISC-V
      */
     bool (*debug_check_watchpoint)(CPUState *cpu, CPUWatchpoint *wp);