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/mpc5121-common.h b/include/configs/mpc5121-common.h
index afae1ab..399e43f 100644
--- a/include/configs/mpc5121-common.h
+++ b/include/configs/mpc5121-common.h
@@ -25,10 +25,10 @@
 
 /* Use SRAM for initial stack */
 #define CONFIG_SYS_INIT_RAM_ADDR	CONFIG_SYS_SRAM_BASE /* Init RAM base */
-#define CONFIG_SYS_INIT_RAM_END		CONFIG_SYS_SRAM_SIZE /* End of area */
+#define CONFIG_SYS_INIT_RAM_SIZE	CONFIG_SYS_SRAM_SIZE /* Size of area */
 
 #define CONFIG_SYS_GBL_DATA_SIZE	0x100	/* num bytes of initial data */
-#define CONFIG_SYS_GBL_DATA_OFFSET	(CONFIG_SYS_INIT_RAM_END - \
+#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 - 0x4)