conf/machine: Build add-on DTBs with linux-qcom-staging kernel

The linux-qcom-staging kernel can produce an additional set of DTB files
called 'addons DTB' files with downstream additions. Build them along with
upstream DTB files to allow users to use downstream features.

As these features are accepted upstream, parts of the addon DTB will be
merged into the main DTB files. Eventually, all of these addon DTBs will
be dropped.

Signed-off-by: Viswanath Kraleti <[email protected]>

Author: Viswanath Kraleti

conf/machine/qcm6490-idp.conf

@@ -14,3 +14,14 @@ MACHINE_ESSENTIAL_EXTRA_RRECOMMENDS += " \
     packagegroup-rb3gen2-firmware \
     packagegroup-rb3gen2-hexagon-dsp-binaries \
 "
+
+#
+# Configuration variables for linux-qcom-staging kernel
+#
+
+# These addon DTs are not yet upstreamed. Build them only in staging kernel
+# to avoid conflicts with other kernel providers like linux-yocto-dev.
+KERNEL_DEVICETREE:append:pn-linux-qcom-staging = " \
+                      qcom/qcm6490-addons-idp.dtb \
+                      qcom/qcm6490-addons-idp-amoled.dtb \
+                      "

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

@@ -21,3 +21,14 @@ MACHINE_ESSENTIAL_EXTRA_RRECOMMENDS += " \
 QCOM_CDT_FILE = "cdt_core_kit"
 QCOM_BOOT_FILES_SUBDIR = "qcm6490"
 QCOM_PARTITION_CONF = "qcom-partition-conf-qcs6490-rb3gen2"
+
+#
+# Configuration variables for linux-qcom-staging kernel
+#
+
+# These addon DTs are not yet upstreamed. Build them only in staging kernel
+# to avoid conflicts with other kernel providers like linux-yocto-dev.
+KERNEL_DEVICETREE:append:pn-linux-qcom-staging = " \
+                      qcom/qcs6490-addons-rb3gen2.dtb \
+                      qcom/qcs6490-addons-rb3gen2-vision-mezz.dtb \
+                      "

conf/machine/qcs9100-ride-sx.conf

@@ -23,3 +23,16 @@ MACHINE_ESSENTIAL_EXTRA_RRECOMMENDS += " \
 QCOM_CDT_FILE = "cdt_ride_sx"
 QCOM_BOOT_FILES_SUBDIR = "qcs9100"
 QCOM_PARTITION_CONF = "qcom-partition-conf-qcs9100-ride-sx"
+
+#
+# Configuration variables for linux-qcom-staging kernel
+#
+
+# These addon DTs are not yet upstreamed. Build them only in staging kernel
+# to avoid conflicts with other kernel providers like linux-yocto-dev.
+KERNEL_DEVICETREE:append:pn-linux-qcom-staging = " \
+                      qcom/qcs9100-addons-ride.dtb \
+                      qcom/qcs9100-addons-ride-r3.dtb \
+                      qcom/sa8775p-addons-ride.dtb \
+                      qcom/sa8775p-addons-ride-r3.dtb \
+                      "