desktop: Map desktop boot params. am: 24be808a3b

Original change: https://android-review.googlesource.com/c/trusty/lk/trusty/+/3451187

Change-Id: I2ab97a646b0310da5b0241eb86184093051b47c1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>