Kconfig: Convert CONFIG_SYS_SRAM_SIZE to Kconfig

This converts ad-hoc CONFIG_SYS_SRAM_SIZE to Kconfig.

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
diff --git a/Kconfig b/Kconfig
index 9f7707a..583d39d 100644
--- a/Kconfig
+++ b/Kconfig
@@ -395,6 +395,13 @@
 	default 0x80000000 if TARGET_PIC32MZDASK
 	default 0x0
 
+config SYS_SRAM_SIZE
+	hex
+	default 0x00080000 if TARGET_PIC32MZDASK
+	default 0x10000 if TARGET_DEVKIT8000
+	default 0x10000 if TARGET_TRICORDER
+	default 0x0
+
 endmenu		# General setup
 
 menu "Boot images"
diff --git a/include/configs/devkit8000.h b/include/configs/devkit8000.h
index 5ef0fe7..4a28712 100644
--- a/include/configs/devkit8000.h
+++ b/include/configs/devkit8000.h
@@ -139,7 +139,6 @@
 
 /* SRAM config */
 #define CONFIG_SYS_SRAM_START              0x40200000
-#define CONFIG_SYS_SRAM_SIZE               0x10000
 
 /* Defines for SPL */
 
diff --git a/include/configs/pic32mzdask.h b/include/configs/pic32mzdask.h
index 25b898f..d50edc7 100644
--- a/include/configs/pic32mzdask.h
+++ b/include/configs/pic32mzdask.h
@@ -19,8 +19,6 @@
 /*----------------------------------------------------------------------
  * Memory Layout
  */
-#define CONFIG_SYS_SRAM_SIZE		0x00080000 /* 512K */
-
 /* Initial RAM for temporary stack, global data */
 #define CONFIG_SYS_INIT_RAM_SIZE	0x10000
 #define CONFIG_SYS_INIT_RAM_ADDR	\
diff --git a/include/configs/tricorder.h b/include/configs/tricorder.h
index 02f5728..b3ae350 100644
--- a/include/configs/tricorder.h
+++ b/include/configs/tricorder.h
@@ -199,7 +199,6 @@
 
 /* SRAM config */
 #define CONFIG_SYS_SRAM_START		0x40200000
-#define CONFIG_SYS_SRAM_SIZE		0x10000
 
 /* Defines for SPL */
 
diff --git a/scripts/config_whitelist.txt b/scripts/config_whitelist.txt
index 1345cef..0d526cf 100644
--- a/scripts/config_whitelist.txt
+++ b/scripts/config_whitelist.txt
@@ -3715,7 +3715,6 @@
 CONFIG_SYS_SPL_MALLOC_SIZE
 CONFIG_SYS_SPL_MALLOC_START
 CONFIG_SYS_SPR
-CONFIG_SYS_SRAM_SIZE
 CONFIG_SYS_SRAM_START
 CONFIG_SYS_SRIO
 CONFIG_SYS_SRIO1_MEM_BASE