[dynarmic] bootstrap loongarch64 host build (#4015)

Minimal additions to make Eden compile.

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4015
Reviewed-by: Lizzie <lizzie@eden-emu.dev>
Reviewed-by: crueter <crueter@eden-emu.dev>

externals/CMakeLists.txt

@@ -82,6 +82,11 @@ if (ARCHITECTURE_riscv64)
     AddJsonPackage(biscuit)
 endif()
 
+# Lagoon
+if (ARCHITECTURE_loongarch64)
+    AddJsonPackage(lagoon)
+endif()
+
 # Vulkan stuff
 AddDependentPackages(vulkan-headers vulkan-utility-libraries)
 

externals/cpmfile.json

@@ -67,6 +67,12 @@
         "tag": "v%VERSION%",
         "hash": "9697e80a7d5d9bcb3ce51051a9a24962fb90ca79d215f1f03ae6b58da8ba13a63b5dda1b4dde3d26ac6445029696b8ef2883f4e5a777b342bba01283ed293856"
     },
+    "lagoon": {
+        "repo": "loongson-community/lagoon",
+        "tag": "%VERSION%",
+        "version": "1.0.0",
+        "hash": "b9380f99c6effaeccc6d8f81d4942e852c11ad28613df637e155451556ae5826f93765bee57a5c87a9740d2bd1db463ad0f55a947772fe9d57eeabae3efa373e"
+    },
     "libadrenotools": {
         "repo": "eden-emulator/libadrenotools",
         "sha": "8ba23b42d7",