Resize the BL2 size limit for Juno

Recent patches to reduce the memory footprint of BL images have
resulted in saving several pages of memory. This patch reduces
the BL2 size limit by 20KB for Juno when ARM_BOARD_OPTIMISE_MEM=1
so that more free space can be freed up for Trusted OS (BL32). Also
SCP_BL2/SCP_BL2U size is now restricted to 80K.

Change-Id: I1573d7a34e24d15e4abce8a14da40dbb5dc81e37
Signed-off-by: Soby Mathew <soby.mathew@arm.com>

plat/arm/board/juno/include/platform_def.h

 /*
- * Copyright (c) 2014-2016, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2014-2017, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -106,7 +106,7 @@
  * little space for growth.
  */
 #if TRUSTED_BOARD_BOOT
-# define PLAT_ARM_MAX_BL2_SIZE		0x1D000
+# define PLAT_ARM_MAX_BL2_SIZE		0x18000
 #else
 # define PLAT_ARM_MAX_BL2_SIZE		0xC000
 #endif
@@ -172,13 +172,13 @@
  * PLAT_CSS_MAX_SCP_BL2_SIZE is calculated using the current
  * SCP_BL2 size plus a little space for growth.
  */
-#define PLAT_CSS_MAX_SCP_BL2_SIZE	0x1D000
+#define PLAT_CSS_MAX_SCP_BL2_SIZE	0x14000
 
 /*
  * PLAT_CSS_MAX_SCP_BL2U_SIZE is calculated using the current
  * SCP_BL2U size plus a little space for growth.
  */
-#define PLAT_CSS_MAX_SCP_BL2U_SIZE	0x1D000
+#define PLAT_CSS_MAX_SCP_BL2U_SIZE	0x14000
 
 /*
  * Define a list of Group 1 Secure and Group 0 interrupts as per GICv3