Update the path to minimal_system.mk am: 96c342d610

Original change: https://android-review.googlesource.com/c/device/linaro/dragonboard/+/2816425

Change-Id: I0b5dfdef7f168b434f12fb1b84f605465f18b859
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>