platforms/kaanapali-mtp: tag device programmer with FIREHOSE_DDR_ELF

Axiom parses contents.xml.in to determine supported build download types. It
considers firehose as a supported download type only if:
  - the <device_programmer> fileName contains the term "firehose", OR
  - the cmm_file_var attribute value contains "firehose"

As firehose term is not present in device programmer name, add
cmm_file_var="FIREHOSE_DDR_ELF" to the device_programmer entries for
Kaanapali-MTP contents.xml.in file to enable the firehose option in the
Axiom build loading UI.

Signed-off-by: Vivek Puar <vpuar@qti.qualcomm.com>

Author: vivpuar

platforms/kaanapali-mtp/ufs/contents.xml.in

@@ -50,7 +50,7 @@
       <windows_root_path>.\</windows_root_path>
       <linux_root_path>./</linux_root_path>
       <image_dir>common</image_dir>
-      <device_programmer>
+      <device_programmer cmm_file_var="FIREHOSE_DDR_ELF">
         <file_name>qsahara_device_programmer.xml</file_name>
         <file_path>.</file_path>
       </device_programmer>