hw/arm/mps2-tz: Don't duplicate modelling of SRAM in AN524

The SRAM at 0x2000_0000 is part of the SSE-200 itself, and we model
it that way in hw/arm/armsse.c (along with the associated MPCs).  We
incorrectly also added an entry to the RAMInfo array for the AN524 in
hw/arm/mps2-tz.c, which was pointless because the CPU would never see
it.  Delete it.

The bug had no guest-visible effect because devices in the SSE-200
take priority over those in the board model (armsse.c maps
s->board_memory at priority -2).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210510190844.17799-2-peter.maydell@linaro.org

hw/arm/mps2-tz.c

@@ -243,19 +243,13 @@ static const RAMInfo an524_raminfo[] = { {
         .size = 512 * KiB,
         .mpc = 0,
         .mrindex = 0,
-    }, {
-        .name = "sram",
-        .base = 0x20000000,
-        .size = 32 * 4 * KiB,
-        .mpc = -1,
-        .mrindex = 1,
     }, {
         /* We don't model QSPI flash yet; for now expose it as simple ROM */
         .name = "QSPI",
         .base = 0x28000000,
         .size = 8 * MiB,
         .mpc = 1,
-        .mrindex = 2,
+        .mrindex = 1,
         .flags = IS_ROM,
     }, {
         .name = "DDR",