Squashed 'dts/upstream/' content from commit aaba2d45dc2a

git-subtree-dir: dts/upstream
git-subtree-split: aaba2d45dc2a1b3bbb710f2a3808ee1c9f340abe
diff --git a/src/arm64/broadcom/bcm2711-rpi-cm4-io.dts b/src/arm64/broadcom/bcm2711-rpi-cm4-io.dts
new file mode 100644
index 0000000..8810322
--- /dev/null
+++ b/src/arm64/broadcom/bcm2711-rpi-cm4-io.dts
@@ -0,0 +1,2 @@
+// SPDX-License-Identifier: GPL-2.0
+#include "arm/broadcom/bcm2711-rpi-cm4-io.dts"