Makefile: test - use /boot
Makefile: test - use /boot

trilean/gummiboot,miguelinux/gummiboot2systemd-boot,aaronp24/gummiboot,todorez/gummiboot-multiboot2,FrozenCow/gummiboot,aaronp24/gummiboot,todorez/gummiboot-multiboot2,android-ia/platform_external_gummiboot,freedesktop-unofficial-mirror/gummiboot,freedesktop-unofficial-mirror/gummiboot,karelzak/gummiboot,todorez/tummiboot,todorez/tummiboot,android-ia/platform_external_gummiboot,trilean/gummiboot,karelzak/gummiboot,FrozenCow/gummiboot,liliang365/my_gummiboot,liliang365/my_gummiboot,miguelinux/gummiboot2systemd-boot