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/ppmc7xx.h b/include/configs/ppmc7xx.h
index e7584c3..831097e 100644
--- a/include/configs/ppmc7xx.h
+++ b/include/configs/ppmc7xx.h
@@ -297,15 +297,15 @@
  * copied to top of RAM by the init code.
  *
  * CONFIG_SYS_INIT_RAM_ADDR		- Address of Init RAM, above exception vect
- * CONFIG_SYS_INIT_RAM_END		- Size of Init RAM
+ * CONFIG_SYS_INIT_RAM_SIZE		- Size of Init RAM
  * CONFIG_SYS_GBL_DATA_SIZE		- Ammount of RAM to reserve for global data
  * CONFIG_SYS_GBL_DATA_OFFSET		- Start of global data, top of stack
  */
 
 #define CONFIG_SYS_INIT_RAM_ADDR	(CONFIG_SYS_SDRAM_BASE + 0x4000)
-#define CONFIG_SYS_INIT_RAM_END	0x4000
+#define CONFIG_SYS_INIT_RAM_SIZE	0x4000
 #define CONFIG_SYS_GBL_DATA_SIZE	128
-#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)
 
 
 /*