qcs6490-rb3gen2: switch to qcom-partition-conf

Make RB3 Gen2 use partition data from qcom-ptool repo instead of having
a local copy inside the meta-qcom layer.

Signed-off-by: Dmitry Baryshkov <[email protected]>

Author: lumag

conf/machine/qcs6490-rb3gen2-core-kit.conf

@@ -20,7 +20,7 @@ MACHINE_ESSENTIAL_EXTRA_RRECOMMENDS += " \
 
 QCOM_CDT_FILE = "cdt_core_kit"
 QCOM_BOOT_FILES_SUBDIR = "qcm6490"
-QCOM_PARTITION_CONF = "qcom-partition-conf-qcs6490-rb3gen2"
+QCOM_PARTITION_FILES_SUBDIR = "partitions/qcs6490-rb3gen2"
 
 QCOM_BOOT_FIRMWARE = "firmware-qcom-boot-qcs6490"