boards: infineon: kit_pse84_eval: cmake fix

Fix to the .hex file path.  This was breaking
twister runs.

Signed-off-by: Bill Waters <bill.waters@infineon.com>
diff --git a/boards/infineon/kit_pse84_eval/board.cmake b/boards/infineon/kit_pse84_eval/board.cmake
index 40792b0..ff91a0f 100644
--- a/boards/infineon/kit_pse84_eval/board.cmake
+++ b/boards/infineon/kit_pse84_eval/board.cmake
@@ -17,5 +17,5 @@
 
 if(CONFIG_CPU_CORTEX_M33 AND CONFIG_TRUSTED_EXECUTION_SECURE)
   set_property(TARGET runners_yaml_props_target
-    PROPERTY hex_file ${ZEPHYR_BINARY_DIR}/${KERNEL_NAME}.signed.hex)
+    PROPERTY hex_file ${KERNEL_NAME}.signed.hex)
 endif()