rcar_gen3: plat: Clean up rcar_pwrc_code_copy_to_system_ram()

Call the function only from architecture setup and at the end of
suspend cycle instead of calling it all over the place.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
diff --git a/plat/renesas/rcar/bl31_plat_setup.c b/plat/renesas/rcar/bl31_plat_setup.c
index c648a07..4e08b5a 100644
--- a/plat/renesas/rcar/bl31_plat_setup.c
+++ b/plat/renesas/rcar/bl31_plat_setup.c
@@ -100,6 +100,7 @@
 			       , BL31_COHERENT_RAM_BASE, BL31_COHERENT_RAM_LIMIT
 #endif
 	    );
+	rcar_pwrc_code_copy_to_system_ram();
 }
 
 void bl31_platform_setup(void)