tegra124/tegra210: Include stages.h in bootblock.c

Needed for the main() prototype

Change-Id: I921a77d8b131b751291d3a279b23ee18b13eca8d
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: http://review.coreboot.org/10862
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

src/soc/nvidia/tegra124/bootblock.c

@@ -19,6 +19,7 @@
 
 #include <assert.h>
 #include <arch/exception.h>
+#include <arch/stages.h>
 #include <bootblock_common.h>
 #include <cbfs.h>
 #include <console/console.h>

src/soc/nvidia/tegra210/bootblock.c

@@ -19,6 +19,7 @@
 
 #include <arch/exception.h>
 #include <arch/hlt.h>
+#include <arch/stages.h>
 #include <bootblock_common.h>
 #include <console/console.h>
 #include <program_loading.h>