Kconfig: Update defaults with platform-specific component options

* Kconfig by default ignores platform-specific component options.
* This causes incorrect default builds.
* Set Kconfig defaults to match options in config_tfm_target.h

Change-Id: I672509c171c2b1fbdd4567825c8adce030822c33
Signed-off-by: Igor Silin <igor.silin@arm.com>
diff --git a/Kconfig b/Kconfig
index ac44d48..a4cad01 100644
--- a/Kconfig
+++ b/Kconfig
@@ -38,6 +38,7 @@
     rsource "$(TFM_SOURCE_DIR)/config/tests/Kconfig.test_psa_api"
 endif
 
+osource "$(PLATFORM_PATH)/Kconfig.comp"
 rsource "secure_fw/spm/Kconfig.comp"
 
 menu "Secure Partitions component configs"