include: Make firehose program configuration flexible

This enables any device requiring custom firehose programmers to
specify FIREHOSE_PROGRAM in their device configuration, improving
maintainability and extensibility for future devices.

The iq-x7181-evk device now defines its firehose programmer
(xbl_s_devprg_ns.melf) in the device template, allowing the
postprocess step to use it when present.

Signed-off-by: Anil Yadav <anilyada@qti.qualcomm.com>

Author: qcom-anilyada

lava_test_plans/devices/iq-x7181-evk

@@ -3,6 +3,7 @@
 
 {% set BOOT_OS_PROMPT = BOOT_OS_PROMPT|default("root@iq-x7181-evk") %}
 {% set ROOTFS_URL_COMP = ROOTFS_URL_COMP|default("gz") %}
+{% set FIREHOSE_PROGRAM = FIREHOSE_PROGRAM | default("xbl_s_devprg_ns.melf") %}
 
 {% set rootfs_label = 'rootfs' %}
 

lava_test_plans/include/postprocess.jinja2

@@ -13,4 +13,7 @@
         - echo "OVERLAY_PATH=/home/" >> $IMAGE_PATH/flash.settings
 {% endif %}
         - echo "DEVICE_TYPE={{flasher_device_type}}" >> $IMAGE_PATH/flash.settings
+{% if FIREHOSE_PROGRAM is defined %}
+        - echo "FIREHOSE_PROGRAM={{ FIREHOSE_PROGRAM }}" >> $IMAGE_PATH/flash.settings
+{% endif %}
         - cat $IMAGE_PATH/flash.settings