dts: arm64: qemu: Move SoC devicetree includes under a vendor directory

Cleans up SoC devicetree include file locations to follow the convention
of dts/<arch>/<vendor>/

Signed-off-by: Maureen Helm <[email protected]>

Author: MaureenHelm

boards/arm64/qemu_cortex_a53/qemu_cortex_a53.dts

@@ -6,7 +6,7 @@
  */
 
 /dts-v1/;
-#include <arm64/qemu-virt/qemu-virt-a53.dtsi>
+#include <arm64/qemu/qemu-virt-a53.dtsi>
 
 / {
 	model = "QEMU Cortex-A53";