Makefile: allow to install libfdt without building executables

When we only need the libfdt calling the target install-lib also builds the
executables listed in $(BINS) because this target depends on all
Instead lets make install-lib only depend on libfdt.

Signed-off-by: Nicolas Escande <nico.escande@gmail.com>
Message-ID: <20230726144336.677135-1-nico.escande@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

Makefile

@@ -238,7 +238,7 @@ install-bin: all $(SCRIPTS)
 	$(INSTALL_PROGRAM) $(BIN) $(DESTDIR)$(BINDIR)
 	$(INSTALL_SCRIPT) $(SCRIPTS) $(DESTDIR)$(BINDIR)
 
-install-lib: all
+install-lib: libfdt
 	@$(VECHO) INSTALL-LIB
 	$(INSTALL) -d $(DESTDIR)$(LIBDIR)
 	$(INSTALL_LIB) $(LIBFDT_lib) $(DESTDIR)$(LIBDIR)