Use unsigned int instead of uint am: 03f80251bd

Original change: https://android-review.googlesource.com/c/platform/system/libufdt/+/2325553

Change-Id: I1bbb971b1d6b45c62ef2b40d12b44ce62832f619
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>