mkeficapsule is used to create capsules for UEFI firmware update.
To ease inclusion into U-Boot tools packages of Linux distributions we
should add it to the tools-only_defconfig.
Provide dummy values for CONFIG_AVB_BUF_ADDR, CONFIG_AVB_BUF_SIZE to
satisfy Kconfig.
Suggested-by: Vagrant Cascadian <vagrant@debian.org> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>