hw/intc: If mmsiaddrcfgh.L == 1, smsiaddrcfg and smsiaddrcfgh are rea…

…d-only.

According to the `The RISC-V Advanced Interrupt Architecture`
document, if register `mmsiaddrcfgh` of the domain has bit L set
to one, then `smsiaddrcfg` and `smsiaddrcfgh` are locked as
read-only alongside `mmsiaddrcfg` and `mmsiaddrcfgh`.

Signed-off-by: Tommy Wu <tommy.wu@sifive.com>
Reviewed-by: Frank Chang <frank.chang@sifive.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Message-Id: <20230609055936.3925438-1-tommy.wu@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>

hw/intc/riscv_aplic.c

@@ -688,13 +688,13 @@ static void riscv_aplic_write(void *opaque, hwaddr addr, uint64_t value,
          * domains).
          */
         if (aplic->num_children &&
-            !(aplic->smsicfgaddrH & APLIC_xMSICFGADDRH_L)) {
+            !(aplic->mmsicfgaddrH & APLIC_xMSICFGADDRH_L)) {
             aplic->smsicfgaddr = value;
         }
     } else if (aplic->mmode && aplic->msimode &&
                (addr == APLIC_SMSICFGADDRH)) {
         if (aplic->num_children &&
-            !(aplic->smsicfgaddrH & APLIC_xMSICFGADDRH_L)) {
+            !(aplic->mmsicfgaddrH & APLIC_xMSICFGADDRH_L)) {
             aplic->smsicfgaddrH = value & APLIC_xMSICFGADDRH_VALID_MASK;
         }
     } else if ((APLIC_SETIP_BASE <= addr) &&