Rename CONFIG_SYS_INIT_RAM_END into CONFIG_SYS_INIT_RAM_SIZE

CONFIG_SYS_INIT_RAM_END was a misnomer as it suggests this might be
some end address; to make the meaning more clear we rename it into
CONFIG_SYS_INIT_RAM_SIZE

No other code changes are performed in this patch, only minor editing
of white space (due to the changed length) and the comments was done,
where noticed.

Note that the code for the PATI and cmi_mpc5xx board configurations
looks seriously broken.  Last known maintainers on Cc:

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Denis Peter <d.peter@mpl.ch>
Cc: Martin Winistoerfer <martinwinistoerfer@gmx.ch>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/include/configs/RBC823.h b/include/configs/RBC823.h
index 5a23e56..91e3b77 100644
--- a/include/configs/RBC823.h
+++ b/include/configs/RBC823.h
@@ -167,9 +167,9 @@
  * Definitions for initial stack pointer and data area (in DPRAM)
  */
 #define CONFIG_SYS_INIT_RAM_ADDR	CONFIG_SYS_IMMR
-#define	CONFIG_SYS_INIT_RAM_END	0x2F00	/* End of used area in DPRAM	*/
+#define	CONFIG_SYS_INIT_RAM_SIZE	0x2F00	/* Size of used area in DPRAM	*/
 #define	CONFIG_SYS_GBL_DATA_SIZE	64  /* size in bytes reserved for initial data */
-#define CONFIG_SYS_GBL_DATA_OFFSET	(CONFIG_SYS_INIT_RAM_END - CONFIG_SYS_GBL_DATA_SIZE)
+#define CONFIG_SYS_GBL_DATA_OFFSET	(CONFIG_SYS_INIT_RAM_SIZE - CONFIG_SYS_GBL_DATA_SIZE)
 #define	CONFIG_SYS_INIT_SP_OFFSET	CONFIG_SYS_GBL_DATA_OFFSET
 
 /*-----------------------------------------------------------------------