ppc4xx: Move virtual address of POST cache test to bigger address

On Sequoia & LWMON5 the virtual address of the POST cache test is now
moved to a bigger address. This enables usage of more memory on those
boards.

Signed-off-by: Stefan Roese <sr@denx.de>

include/configs/lwmon5.h

@@ -153,7 +153,7 @@
 				 CFG_POST_SPR      | \
 				 CFG_POST_UART)
 
-#define CFG_POST_CACHE_ADDR	0x10000000	/* free virtual address		*/
+#define CFG_POST_CACHE_ADDR	0x7fff0000 /* free virtual address	*/
 #define CONFIG_LOGBUFFER
 #define CFG_CONSOLE_IS_IN_ENV /* Otherwise it catches logbuffer as output */
 

include/configs/sequoia.h

@@ -377,7 +377,7 @@
 
 #define CFG_POST_WORD_ADDR	(CFG_GBL_DATA_OFFSET - 0x4)
 #define CONFIG_LOGBUFFER
-#define CFG_POST_CACHE_ADDR	0x10000000 /* free virtual address	*/
+#define CFG_POST_CACHE_ADDR	0x7fff0000 /* free virtual address	*/
 
 #define CFG_CONSOLE_IS_IN_ENV /* Otherwise it catches logbuffer as output */