arm: dts: omap: Apply am57xx-idk overlays to base dtbs

DT overlays in tree need to be applied to a base DTB to validate they
apply, to run schema checks on them, and to catch any errors at compile
time.
Signed-off-by: Rob Herring <robh@kernel.org>
Message-ID: <20231010211925.1629653-1-robh@kernel.org>
Acked-by: Andrew Davis <afd@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/ti/omap/Makefile

@@ -131,6 +131,16 @@ dtb-$(CONFIG_SOC_AM43XX) += \
 am57xx-evm-dtbs := am57xx-beagle-x15.dtb am57xx-evm.dtbo
 am57xx-evm-reva3-dtbs := am57xx-beagle-x15-revc.dtb am57xx-evm.dtbo
 
+am571x-idk-overlays-dtbs := am571x-idk.dtb \
+	am571x-idk-touchscreen.dtbo am57xx-idk-lcd-osd101t2587.dtbo
+am572x-idk-overlays-dtbs := am572x-idk.dtb \
+	am572x-idk-touchscreen.dtbo am57xx-idk-lcd-osd101t2045.dtbo
+
+# Build time test only, enabled by CONFIG_OF_ALL_DTBS
+dtb- += \
+	am571x-idk-overlays.dtb \
+	am572x-idk-overlays.dtb
+
 dtb-$(CONFIG_SOC_DRA7XX) += \
 	am57xx-beagle-x15.dtb \
 	am57xx-beagle-x15-revb1.dtb \