meson.build: list all remaining softmmu targets as comments

Acked-by: Alistair Francis <alistair.francis@wdc.com>
Link: https://lore.kernel.org/qemu-devel/20261024061616.27381-10-pierrick.bouvier@oss.qualcomm.com
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@oss.qualcomm.com>

meson.build

@@ -4275,12 +4275,29 @@ multi_target_supported_targets = [
   'avr-softmmu',
   'hexagon-softmmu',
   'hppa-softmmu',
+  # 'i386-softmmu',
+  # 'loongarch64-softmmu',
   'm68k-softmmu',
   'microblaze-softmmu',
+  # 'mips-softmmu',
+  # 'mips64-softmmu',
+  # 'mips64el-softmmu',
+  # 'mipsel-softmmu',
   'or1k-softmmu',
+  # 'ppc-softmmu',
+  # 'ppc64-softmmu',
+  # 'riscv32-softmmu',
   'riscv64-softmmu',
   'rx-softmmu',
+  # 's390x-softmmu',
+  # 'sh4-softmmu',
+  # 'sh4eb-softmmu',
+  # 'sparc-softmmu',
+  # 'sparc64-softmmu',
   'tricore-softmmu',
+  # 'x86_64-softmmu',
+  # 'xtensa-softmmu',
+  # 'xtensaeb-softmmu',
 ]
 
 emulators = {}