AArch32: Support in SP_MIN to receive arguments from BL2

This patch adds support in SP_MIN to receive generic and
platform specific arguments from BL2.

The new signature is as following:
    void sp_min_early_platform_setup(void *from_bl2,
         void *plat_params_from_bl2);

ARM platforms have been modified to use this support.

Note: Platforms may break if using old signature.
      Default value for RESET_TO_SP_MIN is changed to 0.

Change-Id: I008d4b09fd3803c7b6231587ebf02a047bdba8d0
diff --git a/include/plat/arm/common/plat_arm.h b/include/plat/arm/common/plat_arm.h
index 581573b..29fcffe 100644
--- a/include/plat/arm/common/plat_arm.h
+++ b/include/plat/arm/common/plat_arm.h
@@ -180,7 +180,8 @@
 void arm_tsp_early_platform_setup(void);
 
 /* SP_MIN utility functions */
-void arm_sp_min_early_platform_setup(void);
+void arm_sp_min_early_platform_setup(void *from_bl2,
+		void *plat_params_from_bl2);
 
 /* FIP TOC validity check */
 int arm_io_is_toc_valid(void);