CMake (Android): set rpath for system Android libs

So that Vulkan & OpenCL can find them

CMakeLists.txt

@@ -1142,6 +1142,14 @@ else()
     endif()
 endif()
 
+if(ANDROID)
+    if(CMAKE_SIZEOF_VOID_P EQUAL 8)
+        set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-rpath,/vendor/lib64 -Wl,-rpath,/system/lib64")
+    else()
+        set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-rpath,/vendor/lib -Wl,-rpath,/system/lib")
+    endif()
+endif()
+
 if(LINUX AND EXISTS "/lib/ld-musl-${CMAKE_HOST_SYSTEM_PROCESSOR}.so.1")
     execute_process(COMMAND "/lib/ld-musl-${CMAKE_HOST_SYSTEM_PROCESSOR}.so.1"
                     ERROR_VARIABLE LD_MUSL_RESULT)

src/detection/vulkan/vulkan.c

@@ -40,14 +40,7 @@ static void applyDriverName(VkPhysicalDeviceDriverPropertiesKHR* properties, FFs
 static const char* detectVulkan(FFVulkanResult* result)
 {
     FF_LIBRARY_LOAD(vulkan, "dlopen libvulkan" FF_LIBRARY_EXTENSION " failed",
-        #if __ANDROID__
-            #if UINTPTR_MAX == UINT32_MAX
-                "/system/lib/"
-            #else
-                "/system/lib64/"
-            #endif
-            "libvulkan" FF_LIBRARY_EXTENSION, -1
-        #elif __APPLE__
+        #if __APPLE__
             "libMoltenVK" FF_LIBRARY_EXTENSION, -1
         #elif _WIN32
             "vulkan-1" FF_LIBRARY_EXTENSION, -1