Makefile: Fix "make install" when "make all" needs work

Until recently, target install used to recurse into target directories
in its recipe: it ran make install in a for-loop.  Since target
install depends on target all, this trivially ensured we run the
sub-make install only after completing target all.

Commit 1338a4b7 "Makefile: Reuse all's recursion machinery for clean
and install" moved the target recursion to dependencies.  That's good
(the commit message explains why), but I forgot to add dependencies to
ensure make runs the sub-make install only after completing target
all.  Do that now.

Fixes: 1338a4b7Reported-by: NMark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reported-by: NGuenter Roeck <linux@roeck-us.net>
Tested-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Message-Id: <20190712055935.23061-1-armbru@redhat.com>
Reviewed-by: NDaniel P. Berrangé <berrange@redhat.com>
Reviewed-by: NStefano Garzarella <sgarzare@redhat.com>
Tested-by: NMark Cave-Ayland <mark.cave-ayland@ilande.co.uk>

Makefile

@@ -522,6 +522,7 @@ $(ROM_DIRS_RULES):
 recurse-all: $(addsuffix /all, $(TARGET_DIRS) $(ROM_DIRS))
 recurse-clean: $(addsuffix /clean, $(TARGET_DIRS) $(ROM_DIRS))
 recurse-install: $(addsuffix /install, $(TARGET_DIRS))
+$(addsuffix /install, $(TARGET_DIRS)): all
 
 $(BUILD_DIR)/version.o: $(SRC_PATH)/version.rc config-host.h
 	$(call quiet-command,$(WINDRES) -I$(BUILD_DIR) -o $@ $<,"RC","version.o")