Update kernel-build-tools to ab/7211818
https://ci.android.com/builds/branches/aosp_kernel-build-tools/grid?head=7211818&tail=7211818 Test: treehugger Change-Id: I2bc7d46237c4ee2e9265a6407dcaf7c6eb063244
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https://ci.android.com/builds/branches/aosp_kernel-build-tools/grid?head=7211818&tail=7211818 Test: treehugger Change-Id: I2bc7d46237c4ee2e9265a6407dcaf7c6eb063244
mentioned in commit 0e56acae