Android: Fix building liblcf (when BUILD_LIBLCF=1)

Author: Ghabry

android/2_build_toolchain.sh

@@ -94,7 +94,7 @@ function build() {
 	export CC="clang -target ${TARGET_HOST}${TARGET_API}"
 	export CXX="clang++ -target ${TARGET_HOST}${TARGET_API}"
 
-	export CMAKE_EXTRA_ARGS="-DCMAKE_ANDROID_ARCH_ABI=$2 -DCMAKE_ANDROID_API=$TARGET_API"
+	export CMAKE_EXTRA_ARGS="-DCMAKE_ANDROID_ARCH_ABI=$2 -DCMAKE_ANDROID_API=$TARGET_API -DCMAKE_FIND_ROOT_PATH=$PLATFORM_PREFIX"
 
 	mkdir -p $PLATFORM_PREFIX
 	make_meson_cross "${TARGET_HOST}${TARGET_API}" > $PLATFORM_PREFIX/meson-cross.txt