UpdateCmdLine: set bootloader revision as androidboot.abl.revision

This allows reading the bootloader version via parsing /proc/cmdline,
which will be used by userspace tools like fwupd.

Issue: https://github.com/SHIFTPHONES/android_bootable_bootloader_edk2/issues/2

Change-Id: I5d3d1fded241044768f6a46f61a018c0f2ac238e
Signed-off-by: Alexander Martinz <amartinz@shiftphones.com>
2 files changed