fix non-system mcl

Signed-off-by: crueter <crueter@eden-emu.dev>

src/dynarmic/CMakeLists.txt

@@ -152,12 +152,20 @@ endif()
 
 find_package(Boost 1.57 REQUIRED)
 find_package(fmt 9 CONFIG)
+
+# Pull in externals CMakeLists for libs where available
+add_subdirectory(externals)
+
 find_package(mcl 0.1.12 REQUIRED)
 
 if ("arm64" IN_LIST ARCHITECTURE OR DYNARMIC_TESTS)
     find_package(oaknut 2.0.1 CONFIG)
 endif()
 
+if ("riscv" IN_LIST ARCHITECTURE)
+    find_package(biscuit 0.9.1 REQUIRED)
+endif()
+
 if ("x86_64" IN_LIST ARCHITECTURE)
     find_package(xbyak 7 CONFIG)
     find_package(zycore REQUIRED)
@@ -176,9 +184,6 @@ if (DYNARMIC_TESTS)
     endif()
 endif()
 
-# Pull in externals CMakeLists for libs where available
-add_subdirectory(externals)
-
 # Dynarmic project files
 add_subdirectory(src/dynarmic)
 if (DYNARMIC_TESTS)