fit-dtb-compatible: build ifp mezzanine as an overlay

add lemans ifp mezzanine DTBO to pack as overlay in multiDTB
instead of standalone base DTB. This avoids generating full DTB
for the same hardware when only software features differ

Signed-off-by: Nirmesh Kumar Singh <nirmesh.singh@oss.qualcomm.com>

Author: nkumarsi

conf/machine/include/fit-dtb-compatible.inc

@@ -27,6 +27,10 @@ FIT_DTB_COMPATIBLE[lemans-evk+lemans-evk-camx+lemans-el2] = " \
     qcom,qcs9075-iot-camx-el2kvm \
     qcom,qcs9075v2-iot-camx-el2kvm \
 "
+FIT_DTB_COMPATIBLE[lemans-evk+lemans-evk-mezzanine] = " \
+    qcom,qcs9075-iot-subtype1 \
+    qcom,qcs9075v2-iot-subtype1 \
+"
 FIT_DTB_COMPATIBLE[monaco-evk+monaco-evk-camera-imx577] = "qcom,qcs8275-iot"
 FIT_DTB_COMPATIBLE[monaco-evk+monaco-evk-camx] = "qcom,qcs8275-iot-camx"
 FIT_DTB_COMPATIBLE[qcm6490-idp] = "qcom,qcm6490-idp"