[nrf noup] zephyr: ED25519 KMU has now separate unit for compilation

Modify CMake files to take the unit when KMU is desired.

Signed-off-by: Dominik Ermel <dominik.ermel@nordicsemi.no>

Author: de-nordic

boot/zephyr/CMakeLists.txt

@@ -315,10 +315,15 @@ elseif(CONFIG_BOOT_SIGNATURE_TYPE_ED25519 OR CONFIG_BOOT_ENCRYPT_X25519)
         ${MBEDTLS_ASN1_DIR}/src/asn1parse.c
       )
     endif()
-
-    zephyr_library_sources(
-      ${BOOT_DIR}/bootutil/src/ed25519_psa.c
-    )
+    if(NOT CONFIG_BOOT_SIGNATURE_USING_KMU)
+      zephyr_library_sources(
+        ${BOOT_DIR}/bootutil/src/ed25519_psa.c
+      )
+    else()
+      zephyr_library_sources(
+        ${BOOT_DIR}/bootutil/src/ed25519_psa_kmu.c
+      )
+    endif()
   endif()
 endif()