[nrf noup] bootutil: Change KMU KConfig option

nrf-squash! [nrf noup] bootutil: Add support for KMU stored ED25519 signature key

CRACEN_LIB_KMU exchanged with CRACEN_KMU KConfig option since
NRFX driver is now used instead of LIB_KMU.

Signed-off-by: Anton Zyma <anton.zyma@nordicsemi.no>

Author: AntonZma

boot/zephyr/Kconfig

@@ -431,7 +431,7 @@ config BOOT_BYPASS_KEY_MATCH
 config BOOT_SIGNATURE_USING_KMU
 	bool "Use KMU stored keys for signature verification"
 	depends on PSA_CRYPTO
-	depends on CRACEN_LIB_KMU
+	depends on CRACEN_KMU
 	select PSA_WANT_ALG_GCM
 	select PSA_WANT_KEY_TYPE_AES
 	select PSA_WANT_AES_KEY_SIZE_256