Merge pull request #4028 from jasonb5/add_missing_desp_definition

Adds missing value for desp component

Adds missing value to NAMELIST_DEFINITION_FILE for desp
component.

Test suite:
Test baseline:
Test namelist changes:
Test status: bit for bit

Fixes

User interface changes?:

Update gh-pages html (Y/N)?:

config/e3sm/config_files.xml

@@ -372,6 +372,7 @@
       <value component="dlnd">$COMP_ROOT_DIR_LND/cime_config/namelist_definition_dlnd.xml</value>
       <value component="docn">$COMP_ROOT_DIR_OCN/cime_config/namelist_definition_docn.xml</value>
       <value component="dwav">$COMP_ROOT_DIR_WAV/cime_config/namelist_definition_dwav.xml</value>
+      <value component="desp">$COMP_ROOT_DIR_ESP/cime_config/namelist_definition_desp.xml</value>
       <!-- external model components -->
       <!--  TODO
       <value component="cam"      >$SRCROOT/components/cam/bld/namelist_files/namelist_definition.xml</value>