ARM: tegra: add late init support

Late init function allows passing values like identifiers and
perform device specific configurations of pre-boot stage.

Tested-by: Andreas Westman Dorcsak <hedmoo@yahoo.com> # ASUS TF T30
Tested-by: Svyatoslav Ryhel <clamor95@gmail.com> # LG P895 T30
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Signed-off-by: Tom <twarren@nvidia.com>
diff --git a/arch/arm/include/asm/arch-tegra/sys_proto.h b/arch/arm/include/asm/arch-tegra/sys_proto.h
index c3a2673..566666a 100644
--- a/arch/arm/include/asm/arch-tegra/sys_proto.h
+++ b/arch/arm/include/asm/arch-tegra/sys_proto.h
@@ -31,4 +31,10 @@
  */
 int nvidia_board_init(void);
 
+/**
+ * nvidia_board_late_init() - perform any board-specific
+ *			      init on late stages
+ */
+void nvidia_board_late_init(void);
+
 #endif