llama-model-loader: print warning when using overrides with mmap (#20… #149

Job	Run time
android-ndk (arm64-cpu, -D ANDROID_ABI=arm64-v8a -D ANDROID_PLATFORM=android-31 -D CMAKE_TOOLCHAI...	7m 23s
android	12m 54s
android-ndk (arm64-snapdragon, --preset arm64-android-snapdragon-release)	16m 50s
	37m 7s

Provide feedback