Add a file to track non-merge commits on pkvm branch

Signed-off-by: Will Deacon <willdeacon@google.com>
diff --git a/PKVM.PATCHES b/PKVM.PATCHES
new file mode 100644
index 0000000..2d79c63
--- /dev/null
+++ b/PKVM.PATCHES
@@ -0,0 +1,2 @@
+# Non-merge commits staged on pkvm
+b74d5007a547	arm64: mm: Implement memory encryption API using KVM sharing hypercalls