arm64: dts: qcom: sun: Add devicetree files to opensource project

dsp-devicetree files are currently a part of a proprietary project
and there is a requirement to move them to an opensource project.
This change adds the required files to opensource project with
the compilation disabled until the files are merged.

Change-Id: I9838c13afbcadec7c5a18bab1ccf867e32070cea
Signed-off-by: Anirudh Raghavendra <quic_araghave@quicinc.com>

Kbuild

@@ -0,0 +1,15 @@
+#ifeq ($(CONFIG_ARCH_SUN), y)
+#ifeq ($(CONFIG_ARCH_QTI_VM), y)
+#dtbo-y += sun-dsp-trustedvm.dtbo
+#else
+#dtbo-y += sun-dsp.dtbo
+#endif
+#endif
+
+#ifeq ($(CONFIG_ARCH_NIOBE), y)
+#dtbo-y += niobe-dsp.dtbo
+#endif
+
+always-y	:= $(dtb-y) $(dtbo-y)
+subdir-y	:= $(dts-dirs)
+clean-files	:= *.dtb *.dtbo