When compiling for Android (COMP=ndk) on macOS, the build fails because the
NDK's LLVM toolchain does not recognize the macOS-specific flags
-mdynamic-no-pic and -mmacosx-version-min.
This PR wraps these flags with ifneq ($(COMP),ndk) condition to skip them
during Android cross-compilation.
Please squash and merge this PR.
closes https://github.com/official-stockfish/Stockfish/pull/6927
No functional change
