Interface: Remove the included header file in config_impl.h

The config_impl.h is meant to collect runtime features, the header file
psa_interface_redirect.h is unrelated, it should be included in
psa_config.h directly.

Change-Id: I47c8824f70889901fbc5ed150fc424b3e6e97320
Signed-off-by: Shawn Shan <Shawn.Shan@arm.com>
diff --git a/interface/include/config_impl.h.template b/interface/include/config_impl.h.template
index 282d29e..612190e 100644
--- a/interface/include/config_impl.h.template
+++ b/interface/include/config_impl.h.template
@@ -71,6 +71,4 @@
 #error "FP is not supported for SFN model."
 #endif
 
-#include "psa_interface_redirect.h"
-
 #endif /* __CONFIG_IMPL_H__ */
diff --git a/interface/include/psa_config.h b/interface/include/psa_config.h
index d215fba..1946e52 100644
--- a/interface/include/psa_config.h
+++ b/interface/include/psa_config.h
@@ -26,6 +26,7 @@
 
 /* SPE has specific configurations. */
 #include "config_impl.h"
+#include "psa_interface_redirect.h"
 
 #endif