Increase size of vendor partition to 64M am: 11183cbc9e am: 405446aef6 am: 020508342c

Original change: https://android-review.googlesource.com/c/device/generic/trusty/+/2825375

Change-Id: I51e6044b868897845f68ce03d05100d8fdac0c5d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>