arm: imx: imx-common: init: move arch init common setup

Move common imx6 arch init setup, init.c can be extended
and reused to support imx7 SoC keeping init arch common
code.

Signed-off-by: Adrian Alonso <aalonso@freescale.com>
diff --git a/arch/arm/include/asm/imx-common/sys_proto.h b/arch/arm/include/asm/imx-common/sys_proto.h
index 250f3f4..c0a5b2c 100644
--- a/arch/arm/include/asm/imx-common/sys_proto.h
+++ b/arch/arm/include/asm/imx-common/sys_proto.h
@@ -35,6 +35,9 @@
 void sdelay(unsigned long);
 void set_chipselect_size(int const);
 
+void init_aips(void);
+void init_src(void);
+
 /*
  * Initializes on-chip ethernet controllers.
  * to override, implement board_eth_init()