doc: releases: 4.4: Add COND_CASE_1 entry

Add a Sys section, with an entry for the COND_CASE_1 macro.

Signed-off-by: Pieter De Gendt <[email protected]>

Author: pdgendt

doc/releases/release-notes-4.4.rst

@@ -152,6 +152,10 @@ New APIs and options
   * :kconfig:option:`CONFIG_SETTINGS_SAVE_SINGLE_SUBTREE_WITHOUT_MODIFICATION`
   * :kconfig:option:`CONFIG_SETTINGS_SAVE_SINGLE_SUBTREE_WITHOUT_MODIFICATION_VALUE_SIZE`
 
+* Sys
+
+  * :c:macro:`COND_CASE_1`
+
 .. zephyr-keep-sorted-stop
 
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